In many common conceptualizations of emotion, feelings of positive and negative valence are closely linked to approach and avoidance motivations. Despite its heuristic value, this assumption can lead to inferential problems when measuring affect, or mask important functional differences between emotional responses to distinct classes of stimuli. Though both are stereotypically negative, personal threats should reliably motivate avoidance from danger, while suffering in others may motivate prosocial approach or distress-related withdrawal. We examined associations between valence and motivational direction in 229 participants who viewed images depicting suffering, threat, or a mix of suffering and threat (i.e., harm). We found that threat elicited the greatest avoidance motivation and a strong correlation between avoidance and negative valence (r = .77). Compared to threat, suffering elicited similar negative valence, but less avoidance motivation; a weaker correlation between negativity and avoidance (r = .31); and greater coactivation of approach and avoidance states. Harm images elicited greater negative valence than suffering or threat, but intermediate patterns of approach and avoidance. Across participants, empathy-related traits were associated with the divergence of avoidance motivation from negative valence. These findings offer additional evidence that valence and motivational direction are separable features of affective experience and emphasize the contextual dynamics of emotional processes for supporting goal-directed behavior.

BACKGROUND:Telomere length (TL) is a valuable marker of aging and stress that reflects both genetic and environmental influences. Quantitative PCR (qPCR) TL measurement is a powerful and cost-effective assay, especially in population studies with limited quantities of source material. Nevertheless, collecting and transporting high-quality blood samples can be logistically challenging, and research suggests that several preanalytical and analytical factors can influence the reliability and precision of the qPCR assay. Here we describe a procedure for collecting blood remotely in a large-scale study. We then assess the influence of various features of the samples, as well as their collection, transportation, and storage on DNA quality and TL assay outcomes. METHOD:Participants used at-home collection kits to collect a few drops of whole blood in BD Microtainers during a baseline (n = 265) and 1-year follow-up (n = 178) assessment. DNA was extracted using a magnetic-bead method, and DNA yield, purity, and integrity were assessed. TL was measured using qPCR. To assess inter-assay variation, the coefficient of variation (CV) was calculated across repeated TL measurements (three runs) for each sample. When there was adequate material for duplicate extractions of DNA from the same blood samples, we calculated the intra-class correlation (ICC) of the resultant TL values to assess assay precision. RESULTS:Our analyses revealed that as little as 50 μL of blood yielded sufficient DNA for highly precise TL measurement (ICC = 0.962, n = 365). Transportation time and an additional year of storage time at -80°C did not meaningfully affect DNA quality or assay outcomes. However, blood clotting was associated with longer telomere estimates, whereas greater temperature exposure was related to shorter telomere estimates. CONCLUSIONS:We established that whole blood collected remotely in BD Microtainers can provide a valid sample source for qPCR TL measurement. We also outline important logistical considerations related to sample collection and handling and provide recommendations for researchers who want to use this method.

The COVID-19 pandemic prompted an unprecedented shift in the dissemination of meditation and mindfulness-based instruction from being predominantly in-person to almost exclusively online. Here, we investigated the advantages and disadvantages of these online formats from both teacher and practitioner perspectives, with a focus on perceived efficacy and accessibility. In Study 1, teachers of standardized mindfulness- and compassion-based interventions (n = 209) completed a brief survey about the efficacy and potency of online training programs compared to in-person ones. In Study 2, a US national cohort of meditation practitioners (N = 318) responded to questionnaires detailing their ongoing meditation experience, including what they liked and disliked about the online meditation programs they had engaged in during the early stages of the pandemic. Qualitative responses for practitioners were coded for themes using an inductive method and examined in relation to demographic and meditation practice characteristics. Teachers perceived online programs to be “somewhat less effective” than traditional in-person sessions (p < 0.001, Cohen’s d = 0.46), whereas practitioners tended to report improvements in their practice as a result of the pandemic (p < 0.001, d = 2.58). Practitioners appreciated the accessibility of online classes and the ability to stay connected with a geographically distributed community. Still, many practitioners missed connecting in person. Our findings indicated that meditation practitioners and teachers find online formats valuable, despite their limitations, and provided insights as to how online meditation instruction can be leveraged to provide greater accessibility.

Purpose: The autistic-developed monotropism account suggests autism is characterised by hyperfocus towards interests, although hyperfocus research has not explored associations among self-/caregiver-report and lab-based measures. Other findings suggest autistic attention has an enhanced capacity and/or is unusually prone to involuntary capture. This study used questionnaires and lab-based tasks to investigate autistic attention and probe its relations to inattention/ distractibility, sensory experiences, and anxiety. Methods: 18 autistic and 22 comparison adolescents completed self-report measures of hyper-focus, anxiety, and sensory experiences, and laboratory psychoacoustic tasks, visual working memory and cross-modal attention capture accuracy and reaction time tasks, and a hyperfocus paradigm relying on the N2pc and Pd event-related potentials. Participants' caregivers completed proxy hyperfocus, anxiety, sensory experiences, and inattention questionnaires. Results: Autistic participants had elevated hyperfocus per self-and caregiver-report questionnaires, and exhibited less visual working memory capacity, potentially reflecting difficulty attending to multiple targets. However, groups did not differ in event-related potentials indexing hyperfocus, or behavioural cross-modal attention capture. Different types of attention measures were generally not related to one another. Participants and their caregivers overall viewed hyperfocus' impact as modestly positive, with individual opinions differing. Self-reported hyperfocus was related to self-reported misophonia and sensory hyperreactivity. Conclusions: Questionnaires suggest hyperfocus is elevated in autism and has mixed, nuanced real-world impacts. However, some laboratory paradigms with explicit instructions in highly controlled, often non-naturalistic environments may struggle to capture real-world autistic attentional experiences; additional research is needed to align laboratory and questionnaire measures. This study also suggests autistic perceptual capacities are not globally enhanced.

Prior studies of auditory hyperreactivity in autism have often not distinguished between different aspects of auditory sensory discomfort, such as hyperacusis and misophonia. The present study rigorously characterises multiple forms of auditory sensory hyperreactivity, using a mixture of laboratory-based psychoacoustic tasks and self- and caregiver-reported questionnaires, and examines group differences and relationships among different measures. 18 autistic and 22 comparison adolescents rated the pleasantness of conventionally-pleasant, conventionally-unpleasant, and misophonic trigger sounds at intensities of 50 through 80 dB SPL. They also provided hearing thresholds, loudness discomfort levels, and filled out a number of questionnaires; their caregivers completed additional questionnaires. Autistic participants rated conventionally-pleasant sounds as being more unpleasant at intensities of 60 through 80 dB, but overall loudness discomfort caused by pure tones did not significantly differ across groups, nor did ratings of common misophonic triggers appear to differ. Autistic participants nevertheless self-reported more auditory hyper-reactivity, including hyperacusis and misophonia. However, in the autism group, self-reported auditory hyper-reactivity scores were unexpectedly lower than caregiver-reported scores. Psychoacoustic task and some questionnaire-based measures of misophonia converged well, but hyperacusis measures did not converge well. Sound intolerance reportedly affected autistic participants’ quality of life. However, varied findings with different measures, such as ratings of pure tones versus conventionally-pleasant sounds, emphasise the complexity and seeming idiosyncrasy of sensory discomfort and distress in autism. Psychoacoustic sound rating tasks showed some convergence and some divergence with questionnaire measures, pointing to the importance of multimodal measurement.

Considerable research has now documented the beneficial effects of mindfulness-based practices on psychological functioning. Less is known about the long-term durability of such changes following formal meditation training. In a sample of adults (N = 67, 52% female, ages 22-70 years), we examined changes in 16 measures of psychological adaptive functioning across a 3-month residential meditation intervention and across a subsequent 7-year period. We observed general training-related improvements followed by multi-year returns toward pre-training levels. However, beneficial changes in two personality attributes (agreeableness and neuroticism) were of moderate effect size (d = 0.51 and d = 0.45, respectively) and were retained across the 7-year follow-up. We further found that individual variation in changes was represented by three latent attributes: (Changes related to) Mindful Well-being, Resilient Extraversion, and Self-Compassionate Openness. These results suggest that intensive meditation training is associated with improved adaptive functioning and enduring changes in aspects of personality.

BackgroundGiven its putative roles in mediating prosocial behavior, attachment bonds, and stress physiology, oxytocin modulation has been hypothesized to be a biological correlate of the salubrious effects of meditation practice. Here we investigated the effects of a month-long silent meditation retreat on changes in oxytocin, and the related hormone and vasopressin, in relation to psychosocial changes in attachment style, anxiety, personality measures, and feelings of social connectedness with fellow meditators.MethodsPlasma oxytocin and vasopressin and self-report questionnaires were measured in retreat participants (n = 28) at the beginning of, and 3 weeks into, a residential meditation retreat. Control participants (n = 34), who were similar in age, gender, and meditation experience, were also assessed across a 3-week interval. Linear mixed effects models were used to assess outcomes.ResultsThe retreat group showed a small but significant decrease in oxytocin compared to controls who showed no change. In the retreat group, higher openness to experience at Time 1 predicted greater reductions in oxytocin during the retreat, and lower oxytocin at Time 2 was related to stronger feelings of personal connection with fellow meditators. The changes in oxytocin were not related to attachment style or anxiety. Vasopressin decreased over time across both groups, suggesting no specific effect of retreat.ConclusionThese preliminary findings suggest that meditation training in the context of a silent residential retreat may reduce circulating levels of oxytocin. We interpret this finding from multiple theoretical perspectives, discussing key measurement limitations and proposing future study designs that may help to differentiate the effects of different meditation practices and contexts on oxytocin signaling.

Contemplative practice can occasion powerful psychological experiences. Yet few empirical studies have investigated whether their occurrence is associated with intensive meditation-based interventions. Here, we assess the prevalence of profound, meaningful, and mystical experiences in experienced meditators during a month-long insight meditation retreat compared to a control group of similarly experienced meditators. Participants completed the 100-item States of Consciousness Questionnaire (SOCQ) and the Mysticism Scale before and after a 3-week period of intensive retreat or daily life. Multivariate distance matrix regression was used to compare multivariate profiles of responses on the SOCQ and to describe which items contributed most to differences between groups at the end of retreat. Changes in self-reported mystical dimensions of experience were also directly compared between retreat and control participants. The retreat and control groups differed over the training period in their multivariate profile of individual experiences. Retreat group participants reported a greater extent of profound insights, powerful emotional experiences, and non-ordinary sensory or perceptual events compared to experienced meditators not on retreat. Retreatants also reported greater levels of specific dimensions of mystical experience, including internal unity, transcendence, sacredness, noetic quality, and deeply felt positive affect, relative to control participants. These findings support the idea that intensive periods of meditation training are associated with a range of profound and mystical-type experiences. Increased access to these experiences may be one path by which immersive periods of contemplative training contribute to psychological or spiritual development, though the long-term consequences of such experiences remain to be fully understood. This study is part of a larger investigation that was registered on clinicaltrials.gov (#NCT03056105).

Prior studies suggest that habituation of sensory responses is reduced in autism and that diminished habituation could be related to atypical autistic sensory experiences, for example, by causing brain responses to aversive stimuli to remain strong over time instead of being suppressed. While many prior studies exploring habituation in autism have repeatedly presented identical stimuli, other studies suggest group differences can still be observed in habituation to intermittent stimuli. The present study explored habituation of electrophysiological responses to auditory complex tones of varying intensities (50–80 dB SPL), presented passively in an interleaved manner, in a well‐characterized sample of 127 autistic (MDQ = 65.41, SD = 20.54) and 79 typically developing (MDQ = 106.02, SD = 11.50) children between 2 and 5 years old. Habituation was quantified as changes in the amplitudes of single‐trial responses to tones of each intensity over the course of the experiment. Habituation of the auditory N2 response was substantially reduced in autistic participants as compared to typically developing controls, although diagnostic groups did not clearly differ in habituation of the P1 response. Interestingly, the P1 habituated less to loud 80 dB sounds than softer sounds, whereas the N2 habituated less to soft 50 dB sounds than louder sounds. No associations were found between electrophysiological habituation and cognitive ability or participants' caregiver‐reported sound tolerance (Sensory Profile Hyperacusis Index). The results present study results extend prior research suggesting habituation of certain sensory responses is reduced in autism; however, they also suggest that habituation differences observed using this study's paradigm might not be a primary driver of autistic participants' real‐world sound intolerance.

•BDNF measures do not change as a function of the month-long retreat intervention.•Higher basal serum BDNF levels predict retreat-related increases in telomere length.•Hours of meditation/week positively predict BDNF in controls who practice regularly.

Contemplative traditions have long affirmed that compassion and kindness are trainable skills. While research on meditation practice has recently flourished, the mechanisms that might engender such changes are still poorly understood. Here, we present a motivational framework to explain why meditation training should increase concern for others and modulate empathic engagement with human suffering over time. Meditation practices are conceived as tools for enacting cognitive and emotion regulatory goals that are conditioned by the underlying ethical motivation of the training-to reduce and alleviate suffering. In support of this account, we present data from a randomized, wait-list-controlled study of intensive meditation. In Study 1, we use a novel cardiovascular index to show that 3 months of meditation training can increase the motivational salience of others' suffering, as compared to the salience of threats to oneself. In Study 2, we demonstrate that training-related changes in the ability to orient attention to suffering are mediated by the dynamic regulation of distress-related physiological arousal. Finally, in Study 3, we provide exploratory evidence suggesting that meditation training may influence how human suffering is encoded in memory, leaving lasting imprints on the recollection of emotional experience. Together, our findings suggest that meditation training can strengthen the motivational relevance of others' suffering, prompting a shift from self-focused to other-focused evaluative processing. Considering meditation training from a motivational standpoint offers an important perspective for understanding how compassion can be cultivated through intentional practice. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Background: Meditation retreats are characterized by intensive or concentrated periods of meditation practice, commonly undertaken in a residential setting. Although research indicates that meditation training can positively influence physical and mental health outcomes, the biological consequences of meditation retreat interventions are relatively understudied. In this study, we examined the influence of a month-long, silent meditation retreat on the expression of genes involved in epigenetic modulation and immune processes.Method: We assessed gene expression changes in experienced meditators attending a month-long Insight meditation retreat (n = 28), as compared to a community control group (n = 34) of experienced practitioners living their everyday lives. Blood samples were collected on day two of the retreat (Time 1) and again 3 weeks later (Time 2). Control participants were also assessed across a 3-week interval, during which they maintained their regular daily routines.Results: As compared to controls, retreat participants showed differential changes in the expression of several genes involved in chromatin modulation and inflammation. The most substantive finding was downregulation of the TNF pathway in retreat participants, which was not observed in controls.Conclusions: These findings indicate that meditation retreat participation may influence some of the inflammatory mechanisms involved in the development of chronic diseases, and that this style of psychosocial intervention may have therapeutic potential, particularly in experienced practitioners.

Background Reconciling results obtained using different types of sensory measures is a challenge for autism sensory research. The present study used questionnaire, psychophysical, and neurophysiological measures to characterize autistic sensory processing in different measurement modalities. Methods Participants were 46 autistic and 21 typically developing 11- to 14-year-olds. Participants and their caregivers completed questionnaires regarding sensory experiences and behaviors. Auditory and somatosensory event-related potentials (ERPs) were recorded as part of a multisensory ERP task. Auditory detection, tactile static detection, and tactile spatial resolution psychophysical thresholds were measured. Results Sensory questionnaires strongly differentiated between autistic and typically developing individuals, while little evidence of group differences was observed in psychophysical thresholds. Crucially, the different types of measures (neurophysiological, psychophysical, questionnaire) appeared to be largely independent of one another. However, we unexpectedly found autistic participants with larger auditory Tb ERP amplitudes had reduced hearing acuity, even though all participants had hearing acuity in the non-clinical range. Limitations The autistic and typically developing groups were not matched on cognitive ability, although this limitation does not affect our main analyses regarding convergence of measures within autism. Conclusion Overall, based on these results, measures in different sensory modalities appear to capture distinct aspects of sensory processing in autism, with relatively limited convergence between questionnaires and laboratory-based tasks. Generally, this might reflect the reality that laboratory tasks are often carried out in controlled environments without background stimuli to compete for attention, a context which may not closely resemble the busier and more complex environments in which autistic people’s atypical sensory experiences commonly occur. Sensory questionnaires and more naturalistic laboratory tasks may be better suited to explore autistic people’s real-world sensory challenges. Further research is needed to replicate and investigate the drivers of the unexpected association we observed between auditory Tb ERP amplitudes and hearing acuity, which could represent an important confound for ERP researchers to consider in their studies.

Most prior studies of multisensory integration (MSI) in autism have measured MSI in only a single combination of modalities - typically audiovisual integration. The present study used onset reaction times (RTs) and 125-channel electroencephalography (EEG) to examine different forms of bimodal and trimodal MSI based on combinations of auditory (noise burst), somatosensory (finger tap), and visual (flash) stimuli presented in a spatially-aligned manner using a custom desktop apparatus. A total of 36 autistic and 19 non-autistic adolescents between the ages of 11-14 participated. Significant RT multisensory facilitation relative to summed unisensory RT was observed in both groups, as were significant differences between summed unisensory and multisensory ERPs. Although the present study's statistical approach was not intended to test effect latencies, these interactions may have begun as early as similar to 45 ms, constituting "early" (<100 ms) MSI. RT and ERP measurements of MSI appeared independent of one another. Groups did not significantly differ in multisensory RT facilitation, but we found exploratory evidence of group differences in the magnitude of audiovisual interactions in ERPs. Future research should make greater efforts to explore MSI in under-represented populations, especially autistic people with intellectual disabilities and nonspeaking/minimally-verbal autistic people.

Elevated “neural noise” has been advanced as an explanation of autism and autistic sensory experiences. However, functional neuroimaging measures of neural noise may be vulnerable to contamination by recording noise. This study explored variability of electrophysiological responses to tones of different intensities in 127 autistic and 79 typically-developing children aged 2–5 years old. A rigorous data processing pipeline, including advanced visualizations of different signal sources that were maximally independent across different time lags, was used to identify and eliminate putative recording noise. Inter-trial variability was measured using median absolute deviations (MADs) of EEG amplitudes across trials and inter-trial phase coherence (ITPC). ITPC was elevated in autism in the 50 and 60 dB intensity conditions, suggesting diminished (rather than elevated) neural noise in autism, although reduced ITPC to soft 50 dB sounds was associated with increased loudness discomfort. Autistic and non-autistic participants did not differ in MADs, and indeed, the vast majority of the statistical tests examined in this study yielded no significant effects. These results appear inconsistent with the neural noise account.

One of the most universally accepted facts about autism is that it is heterogenous. Individuals diagnosed with autism spectrum disorder have a wide range of behavioral presentations and a variety of co-occurring medical and mental health conditions. The identification of more homogenous subgroups is likely to lead to a better understanding of etiologies as well as more targeted interventions and treatments. In 2006, we initiated the UC Davis MIND Institute Autism Phenome Project (APP) with the overarching goal of identifying clinically meaningful subtypes of autism. This ongoing longitudinal multidisciplinary study now includes over 400 children and involves comprehensive medical, behavioral, and neuroimaging assessments from early childhood through adolescence (2-19 years of age). We have employed several strategies to identify sub-populations within autistic individuals: subgrouping by neural, biological, behavioral or clinical characteristics as well as by developmental trajectories. In this Mini Review, we summarize findings to date from the APP cohort and describe progress made toward identifying meaningful subgroups of autism.

ObjectivesA core assumption of meditation training is that cognitive capacities developed during formal practice will transfer to other contexts or activities as expertise develops over time. This implies that meditation training might influence domain-general neurocognitive systems, the spontaneous activity of which should be reflected in the dynamics of the resting brain. Previous research has demonstrated that 3 months of meditation training led to reductions in EEG beta band power during mindfulness of breathing practice. The current study extends these findings to ask whether concomitant shifts in power are observed during 2 min of eyes closed rest, when participants are not explicitly engaged in formal meditation.MethodsExperienced meditation practitioners were randomly assigned to practice 3 months of focused attention meditation in a residential retreat, or to serve as waitlist controls. The waitlist controls later completed their own 3-month retreat. Permutation-based cluster analysis of 88-channel resting EEG data was used to test for spectral changes in spontaneous brain activity over the course of the retreats.ResultsLongitudinal reductions in EEG power in the beta frequency range were identified and replicated across the two independent training periods. Less robust reductions were also observed in the high alpha frequency range, and in individual peak alpha frequency. These changes closely mirror those previously observed during formal mindfulness of breathing meditation practice.ConclusionsThese findings suggest that the neurocognitive effects of meditation training can extend beyond the bounds of formal practice, influencing the spontaneous activity of the resting brain. Rather than serving as an invariant baseline, resting states might carry meaningful training-related effects, blurring the line between state and trait change.

This study uses factor mixture modelling of the Short Sensory Profile (SSP) at two time points to describe subgroups of young autistic and typically-developing children. This approach allows separate SSP subscales to influence overall SSP performance differentially across subgroups. Three subgroups were described, one including almost all typically-developing participants plus many autistic participants. SSP performance of a second, largely-autistic subgroup was predominantly shaped by a subscale indexing behaviours of low energy/weakness. Finally, the third subgroup, again largely autistic, contained participants with low (or more "atypical") SSP scores across most subscales. In this subgroup, autistic participants exhibited large P1 amplitudes to loud sounds. Autistic participants in subgroups with more atypical SSP scores had higher anxiety and more sleep disturbances.

Limited research has investigated the development of auditory ERPs in young children, and particularly how stimulus intensity may affect these auditory ERPs. Previous research has also yielded inconsistent findings regarding differences in the development of auditory ERPs in autism and typical development. Furthermore, stimulus intensity may be of particular interest in autism insofar as autistic people may have atypical experiences of sound intensity (e.g., hyperacusis). Therefore, the present study examined associations between age and ERPs evoked by tones of differing intensities (50, 60, 70, and 80 dB SPL) in a large sample of young children (2?5 years) with and without an autism diagnosis. Correlations between age and P1 latencies were examined, while cluster-based permutation testing was used to examine associations between age and neural response amplitudes, as well as group differences in amplitude, over all electrode sites in the longer time window of 1?350 ms. Older autistic participants had faster P1 latencies, but these effects only attained significance over the right hemisphere in response to soft 50 dB sounds. Autistic participants had slower P1 responses to 80 dB sounds over the right hemisphere. Over the scalp regions associated with the later N2 response, more negative response amplitudes (that is, larger N2 responses) were observed in typically-developing than autistic participants. Furthermore, continuous associations between response amplitudes and age suggested that older typically-developing participants exhibited stronger N2 responses to all intensities, though this effect may have at least in part reflected the absence of small positive voltage deflections in the N2 latency window. Age was associated with amplitudes of responses to 50 dB through 70 dB sounds in autism, but in contrast to Typical Development (TD), little evidence of relationships between age and amplitudes in the N2 latency window was found in autism in the 80 dB condition. Although caution should be exercised in interpretation due to the cross-sectional nature of this study, these findings suggest that developmental changes in auditory responses may differ across diagnostic groups in a manner that depends on perceived loudness and/or stimulus intensity.

Meditation practice is believed to foster states of mindful awareness and mental quiescence in everyday life. If so, then the cultivation of these qualities with training ought to leave its imprint on the activity of intrinsic functional brain networks. In an intensive longitudinal study, we investigated associations between meditation practitioners’ experiences of felt mindful awareness and changes in the dynamics of spontaneous electrophysiological functional brain networks. Experienced meditators were randomly assigned to complete 3 months of full-time training in focused-attention meditation (during an initial intervention) or to serve as waiting-list controls and receive training second (during a later intervention). We collected broadband EEG during rest at the beginning, middle, and end of the two training periods. Using a data-driven approach, we segmented the EEG into a time series of transient microstate intervals based on data-driven clustering of topographic voltage patterns. Participants also provided daily reports of felt mindful awareness and mental quiescence, and reported daily on four experiential qualities of their meditation practice during training. We found that meditation training led to increases in mindful qualities of awareness, which corroborate contemplative accounts of deepening mental calm and attentional focus. We also observed reductions in the strength and duration of EEG microstates across both interventions. Importantly, changes in the dynamic sequencing of microstates were associated with daily increases in felt attentiveness and serenity during training. Our results connect shifts in subjective qualities of meditative experience with the large-scale dynamics of whole brain functional EEG networks at rest.