التفاصيل البيبلوغرافية
| العنوان: |
Right-lateralized sleep spindles are associated with neutral over emotional bias in picture recognition: An overnight study |
| المؤلفون: |
Halonen, Risto, Luokkala, Sanni, Kuula, Liisa, Antila, Minea, Pesonen, Anu-Katriina |
| المساهمون: |
University of Helsinki including Helsinki University Central Hospital |
| المصدر: |
Cognitive, Affective, & Behavioral Neuroscience ; volume 23, issue 5, page 1445-1459 ; ISSN 1530-7026 1531-135X |
| بيانات النشر: |
Springer Science and Business Media LLC |
| سنة النشر: |
2023 |
| مصطلحات موضوعية: |
Behavioral Neuroscience, Cognitive Neuroscience |
| الوصف: |
Sleep is especially important for emotional memories, although the mechanisms for prioritizing emotional content are insufficiently known. As during waking, emotional processing during sleep may be hemispherically asymmetric; right-lateralized rapid-eye movement (REM) sleep theta (~4–7 Hz) is reportedly associated with emotional memory retention. No research exists on lateralized non-REM sleep oscillations. However, sleep spindles, especially when coupled with slow oscillations (SOs), facilitate off-line memory consolidation. Our primary goal was to examine how the lateralization (right-to-left contrast) of REM theta, sleep spindles, and SO-spindle coupling is associated with overnight recognition memory in a task consisting of neutral and emotionally aversive pictures. Thirty-two healthy adults encoded 150 target pictures before overnight sleep. The recognition of target pictures among foils (discriminability, d’ ) was tested immediately, 12 hours, and 24 hours after encoding. Recognition discriminability between targets and foils was similar for neutral and emotional pictures in immediate and 12-h retrievals. After 24 hours, emotional pictures were less accurately discriminated ( p < 0.001). Emotional difference at 24-h retrieval was associated with right-to-left contrast in frontal fast spindle density ( p < 0.001). The lateralization of SO-spindle coupling was associated with higher neutral versus emotional difference across all retrievals ( p = 0.004). Our findings contribute to a largely unstudied area in sleep-related memory research. Hemispheric asymmetry in non-REM sleep oscillations may contribute to how neutral versus emotional information is processed. This is presumably underlain by both mechanistic offline memory consolidation and a trait-like cognitive/affective bias that influences memory encoding and retrieval. Methodological choices and participants’ affective traits are likely involved. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.3758/s13415-023-01113-4 |
| DOI: |
10.3758/s13415-023-01113-4.pdf |
| DOI: |
10.3758/s13415-023-01113-4/fulltext.html |
| الإتاحة: |
https://doi.org/10.3758/s13415-023-01113-4Test |
| حقوق: |
https://creativecommons.org/licenses/by/4.0Test ; https://creativecommons.org/licenses/by/4.0Test |
| رقم الانضمام: |
edsbas.CDCABBEA |
| قاعدة البيانات: |
BASE |
