Cited by 92Sleep and Wakefulness ResearchSleep and related disordersPosttraumatic Stress Disorder Research

Theta frequency activity during rapid eye movement (REM) sleep is greater in people with resilience versus PTSD

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Cowdin, Nancy, Kobayashi, Ihori, Mellman, Thomas A.·2014·Experimental Brain Research

Abstract

Emotional memory consolidation has been associated with rapid eye movement (REM) sleep, and recent evidence suggests that increased electroencephalogram spectral power in the theta (4-8 Hz) frequency range indexes this activity. REM sleep has been implicated in posttraumatic stress disorder (PTSD) as well as in emotional adaption. In this cross-sectional study, thirty young healthy African American adults with trauma exposure were assessed for PTSD status using the Clinician Administered PTSD Scale. Two consecutive night polysomnographic (PSG) recordings were performed and data scored for sleep stages. Quantitative electroencephalographic spectral analysis was used to measure theta frequency components sampled from REM sleep periods of the second-night PSG recordings. Our objective was to compare relative theta power between trauma-exposed participants who were either resilient or had developed PTSD. Results indicated higher right prefrontal theta power during the first and last REM periods in resilient participants compared with participants with PTSD. Right hemisphere prefrontal theta power during REM sleep may serve as a biomarker of the capacity for adaptive emotional memory processing among trauma-exposed individuals.

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  • REM theta oscillations play a crucial role in emotional re-processing.

    “the results on EEG pattern related to the incorporated memories converged to assign a crucial role of REM theta oscillations in emotional re-processing”

    From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Cowdin et al., 2014

    The Discussion says adaptive emotional-memory processing during REM sleep may be indexed by right frontal theta activity. Its summary calls theta a possible marker of affective-memory processing and says this needs future evaluation; it does not establish that theta oscillations play a crucial or causal role in emotional re-processing. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Compelling evidence indicates that the potential EEG marker of emotional processes is frontal theta activity (5-7 Hz) during REM sleep.

    “compelling evidence indicates that the potential EEG marker of emotional processes is the frontal theta activity (5–7 Hz) during REM sleep”

    From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Cowdin et al., 2014

    The Discussion says right frontal theta activity during REM sleep may be a marker of affective memory processing, but presents this as a possibility rather than a settled finding. The Methods define the theta band analyzed as 4–8 Hz, not the claimed 5–7 Hz. Page numbers were not available in our copy. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Prefrontal theta rhythm is related to emotional coping strategy in trauma-exposed subjects who never developed PTSD, as resilient individuals showed higher theta than the clinical sample.

    “In addition, the prefrontal theta rhythm seems to be related to emotional coping strategy in trauma-exposed subjects that had never developed PTSD, since that these resilient individuals showed higher theta than clinical sample (Cowdin et al., 2014).”

    From The Functional Role of Dreaming in Emotional Processes (2019) · cites this paper as Cowdin et al., 2014

    The Abstract and Discussion report higher right prefrontal theta power in resilient trauma-exposed participants than in participants with PTSD, and suggest a link to adaptive emotional memory processing. The finding is specific to REM sleep; the study did not measure an emotional coping strategy, so that interpretation goes beyond its evidence. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Frontal theta activity is a brain mechanism underlying the processing of emotional memories.

    “suggests frontal theta activity as a brain mechanism underlying such processing (Nishida et al., 2009; Prehn-Kristensen et al., 2013; Cowdin et al., 2014; Durrant et al., 2015; Seeley et al., 2016; Marquis et al., 2017).”

    From Incorporation of recent waking-life experiences in dreams correlates with frontal theta activity in REM sleep (2018) · cites this paper as Cowdin et al., 2014

    The Discussion says right frontal theta activity during REM sleep may be a marker of affective memory processing capacities. That supports an association, but the paper does not establish frontal theta activity as an underlying brain mechanism; its finding is also specific to REM sleep. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

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Authors
Cowdin, N., Kobayashi, I., & Mellman, T. A.
Affiliations
  • Georgetown University (US)
  • Howard University (US)
Corresponding author
Mellman, Thomas A.
Venue
Experimental Brain Research
Published
2014-02-15
Volume
232
Issue
5
Pages
1479-1485
ISSN
  • 0014-4819 (ISSN-L)
  • 1432-1106
OpenAlex
W2005713259
Cited by
92
References
46
Citations by year
2026: 1 · 2025: 5 · 2024: 8 · 2023: 9 · 2022: 6 · 2021: 9 · 2020: 12 · 2019: 15 · 2018: 8 · 2017: 6 · 2016: 5 · 2015: 6 · 2014: 2
FWCI
3.53
Type
journal article
Language
en
Open access
Locations
  • Experimental Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (UL1TR000101)
  • Center for Clinical and Translational Sciences, University of Texas Health Science Center at Houston
  • National Heart, Lung, and Blood Institute (R01HL087995)
  • National Center for Research Resources (UL1RR031975)
  • National Center for Advancing Translational Sciences
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
Keywords
REM sleep, theta oscillations, post-traumatic stress disorder, resilience, emotional memory consolidation, trauma exposure, right hemisphere, EEG spectral power, sleep biomarkers, polysomnography
MeSH terms
Adolescent, Adult, Electroencephalography, Female, Fourier Analysis, Humans, Male, Psychiatric Status Rating Scales, Sleep, REM, Stress Disorders, Post-Traumatic, Theta Rhythm, Polysomnography, Young Adult

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