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Conference Paper: Sleep Moderates Effects of a Depressive Episode on Response Bias to Emotional Eyes
Title | Sleep Moderates Effects of a Depressive Episode on Response Bias to Emotional Eyes |
---|---|
Authors | |
Issue Date | 2014 |
Publisher | The American Academy of Sleep Medicine. The Journal's web site is located at http://www.journalsleep.org |
Citation | The 28th Annual Meeting of the Associated Professional Sleep Societies, LLC (APSS), Minneapolis, MN., 31 May-4 June 2014. In Sleep, 2014, v. 37 Abstract Suppl., p. A278-A279, abstract no. 0796 How to Cite? |
Abstract | Introduction: Response bias was a tendency to say “yes” or “no” in
distinguishing learnt materials from new information. Depressive individuals,
even remitted, were reported to be biased in recalling negative
experience. While poor sleep was shown to be associated with depressed
mood, its role in emotion-modulated cognition (including response bias
towards emotional stimuli) in depressed individuals remained to be determined. Methods: A community sample (n = 81, 32 males, aged 17-25, nonmedicated)
was recruited and interviewed according to the structuralclinical-
interview for DSM-IV disorders. Sixteen participants reported
a depressive episode (depressive-episode group) in the lifetime, and the
rest formed the control-group. Both groups completed a five-day sleeplog
and emotional recognition memory task of positive, neutral and negative
eyes. There was a learning- and testing-phase, separated by either a
90-minute polysomnography-monitored nap or wakefulness. Response
bias (c’) was calculated following signal detection theory, with a negative
c’ representing tendency to say “yes”, and positive c’ for “no”.
Results: The depressive-episode and control-group were matched on
demographics and sleep duration (ps > .05). A factorial design with
two between-subject factors (depressive-episode and nap-condition) revealed
a significant main effect of depressive-episode on positive eyes
c’, F(1,72) = 5.74, p = .019, indicating more negative c’ towards positive
eyes. Depressive-episode interacted with nap-condition on c’ of positive,
F(1,72) = 4.432, p = .039, and negative eyes, F(1,72) = 5.895, p =
.018. Post-hoc analyses (Mann-Whitney U test) showed that among the
depressive-episode group, napped individuals had significantly more
negative c’ on positive (p = .049) and negative eyes (p = .026). Among
controls, there were no differences between the napped and wake individuals
(ps > .05).
Conclusion: Sleep was found to moderate the effects of depressive
episode on response bias in emotionally-charged eyes: following a nap,
individuals with depressive episode had a higher tendency to say “yes”
to both positive and negative eyes, suggesting that sleep may facilitate
recognition of both positive and negative information in individuals
with depressive episode. |
Description | Clinical Sleep Science: 9. Psychiatic and Behavioral Disorder and Sleep Poster Session P19: Sleep and Depression |
Persistent Identifier | http://hdl.handle.net/10722/201428 |
ISSN | 2023 Impact Factor: 5.3 2023 SCImago Journal Rankings: 1.717 |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wong, ML | en_US |
dc.contributor.author | Lau, EYY | en_US |
dc.date.accessioned | 2014-08-21T07:27:01Z | - |
dc.date.available | 2014-08-21T07:27:01Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | The 28th Annual Meeting of the Associated Professional Sleep Societies, LLC (APSS), Minneapolis, MN., 31 May-4 June 2014. In Sleep, 2014, v. 37 Abstract Suppl., p. A278-A279, abstract no. 0796 | en_US |
dc.identifier.issn | 0161-8105 | - |
dc.identifier.uri | http://hdl.handle.net/10722/201428 | - |
dc.description | Clinical Sleep Science: 9. Psychiatic and Behavioral Disorder and Sleep | - |
dc.description | Poster Session P19: Sleep and Depression | - |
dc.description.abstract | Introduction: Response bias was a tendency to say “yes” or “no” in distinguishing learnt materials from new information. Depressive individuals, even remitted, were reported to be biased in recalling negative experience. While poor sleep was shown to be associated with depressed mood, its role in emotion-modulated cognition (including response bias towards emotional stimuli) in depressed individuals remained to be determined. Methods: A community sample (n = 81, 32 males, aged 17-25, nonmedicated) was recruited and interviewed according to the structuralclinical- interview for DSM-IV disorders. Sixteen participants reported a depressive episode (depressive-episode group) in the lifetime, and the rest formed the control-group. Both groups completed a five-day sleeplog and emotional recognition memory task of positive, neutral and negative eyes. There was a learning- and testing-phase, separated by either a 90-minute polysomnography-monitored nap or wakefulness. Response bias (c’) was calculated following signal detection theory, with a negative c’ representing tendency to say “yes”, and positive c’ for “no”. Results: The depressive-episode and control-group were matched on demographics and sleep duration (ps > .05). A factorial design with two between-subject factors (depressive-episode and nap-condition) revealed a significant main effect of depressive-episode on positive eyes c’, F(1,72) = 5.74, p = .019, indicating more negative c’ towards positive eyes. Depressive-episode interacted with nap-condition on c’ of positive, F(1,72) = 4.432, p = .039, and negative eyes, F(1,72) = 5.895, p = .018. Post-hoc analyses (Mann-Whitney U test) showed that among the depressive-episode group, napped individuals had significantly more negative c’ on positive (p = .049) and negative eyes (p = .026). Among controls, there were no differences between the napped and wake individuals (ps > .05). Conclusion: Sleep was found to moderate the effects of depressive episode on response bias in emotionally-charged eyes: following a nap, individuals with depressive episode had a higher tendency to say “yes” to both positive and negative eyes, suggesting that sleep may facilitate recognition of both positive and negative information in individuals with depressive episode. | - |
dc.language | eng | en_US |
dc.publisher | The American Academy of Sleep Medicine. The Journal's web site is located at http://www.journalsleep.org | - |
dc.relation.ispartof | Sleep | en_US |
dc.title | Sleep Moderates Effects of a Depressive Episode on Response Bias to Emotional Eyes | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Lau, EYY: eyylau@hku.hk | en_US |
dc.identifier.authority | Lau, EYY=rp00634 | en_US |
dc.identifier.hkuros | 234840 | en_US |
dc.identifier.volume | 37 | - |
dc.identifier.issue | Abstract Suppl. | - |
dc.identifier.spage | A278, abstract no. 0796 | - |
dc.identifier.epage | A279, abstract no. 0796 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0161-8105 | - |