Universität zu Köln

Birchler-Pedross, Angelina, Frey, Sylvia, Cajochen, Christian and Chellappa, Sarah L. ORCID: 0000-0002-6190-464X (2022). Circadian and Sleep Modulation of Dreaming in Women with Major Depression. Clocks Sleep, 4 (1). S. 114 - 129. BASEL: MDPI. ISSN 2624-5175

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Abstract

Growing evidence indicates an association between reduced dream recall and depressive symptomatology. Here, we tested the prediction that reduced dream recall in individuals experiencing major depressive disorder (MDD) is due to alterations in circadian and sleep processes. Nine young healthy women (20-31 years) and eight young unmedicated women (20-31 years) diagnosed with MDD underwent a 40 h multiple nap protocol with ten alternating cycles of 150 min wake/75 min sleep under a stringently controlled circadian laboratory protocol. After each nap, we assessed dream recall, number of dreams and dream emotional load using the Sleep Mentation Questionnaire. Dream recall and the number of dreams did not significantly differ between groups (pFDR > 0.1). However, there was a significant difference for the dream emotional load (interaction of Group vs. Time, pFDR = 0.01). Women with MDD had a two-fold higher (negative) emotional load as compared to healthy control women, particularly after naps during the circadian night (between similar to 22:00 h and similar to 05:00 h; Tukey-Kramer test, p = 0.009). Furthermore, higher (negative) dream emotional load was associated with impaired mood levels in both groups (R-2 = 0.71; p < 0.001). Our findings suggest that the circadian and sleep modulation of dreaming may remain intact in unmedicated young women experiencing MDD.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Birchler-Pedross, Angelina UNSPECIFIED UNSPECIFIED UNSPECIFIED Frey, Sylvia UNSPECIFIED UNSPECIFIED UNSPECIFIED Cajochen, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Chellappa, Sarah L. UNSPECIFIED orcid.org/0000-0002-6190-464X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-668202
DOI:	10.3390/clockssleep4010012
Journal or Publication Title:	Clocks Sleep
Volume:	4
Number:	1
Page Range:	S. 114 - 129
Date:	2022
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2624-5175
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language YOUNG-WOMEN; RECALL; PRESSURE; PHASE; AGE; SCALE; MOOD Multiple languages Clinical Neurology; Neurosciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66820