Nightmare sufferers show atypical emotional semantic associations and prolonged REM sleep-dependent emotional priming
| Autor: | Michelle Carr, Tore Nielsen, Louis-Philippe Marquis, Cloé Blanchette-Carrière, Cher Tieng Ting |
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| Rok vydání: | 2015 |
| Předmět: |
Male
medicine.medical_specialty Time Factors Polysomnography Emotions Sleep REM Audiology 050105 experimental psychology Developmental psychology Arousal 03 medical and health sciences Young Adult 0302 clinical medicine Memory medicine Humans 0501 psychology and cognitive sciences Sleep Stages medicine.diagnostic_test 05 social sciences Quebec Eye movement General Medicine Nightmare Dreams Semantics Nap Female medicine.symptom Psychology Sleep Priming (psychology) 030217 neurology & neurosurgery Psychopathology |
| Zdroj: | Sleep medicine. 20 |
| ISSN: | 1878-5506 |
| Popis: | Study Objectives The objective of this study was to investigate whether nightmare (NM) sufferers exhibit an abnormal network of emotional semantic associations as measured by a recently developed, rapid eye movement (REM) sleep-sensitive, associational breadth (AB) task. Design NM sufferers were compared to healthy controls (CTL) for their performance on an emotional AB task containing positive and negative cue words both before and after a nap with REM sleep. AB was assessed in both a priming condition, where cue words were explicitly memorized before sleep, and a non-priming condition, where cue words were not memorized. Performance was assessed again 1 week later. Setting The study was conducted in a sleep laboratory with polysomnographic recording at the Hopital du Sacre-Coeur de Montreal Participants Twenty-eight participants between the ages of 18 and 35 years ( M age = 23.3 ± 3.4) were included in the study. Measurements and Results The NM group scored higher than the CTL group on both positive and negative AB, with group differences persisting at the 1-week retest. However, the two groups did not differ as expected in the AB priming effect following REM sleep. Both groups showed decreased REM sleep-related AB priming for negative cue words and increased AB priming for positive cue words. However, the NM group maintained these effects 1 week later, whereas the CTL group did not. Conclusions NM sufferers may access broader than normal emotional semantic networks in the wake state, a difference that may lead to this group being perceived as more creative. The fact that the AB priming effect is maintained at the 1-week retest for NM sufferers suggests that the presence of frequent NMs may alter REM sleep-dependent emotional processes over time. |
| Databáze: | OpenAIRE |
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