Heritability of startle reactivity and affect modified startle

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Fältnamn	Indikatorer	Metadata
000		03902naa a2200445 4500
001		oai:DiVA.org:oru-55064
003		SwePub
008		170130s2017 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-550642 URI
024	7	a https://doi.org/10.1016/j.ijpsycho.2016.09.0092 DOI
040		a (SwePub)oru
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Dhamija, Devikau Department of Psychology, University of Southern California, Los Angeles, USA4 aut
245	1 0	a Heritability of startle reactivity and affect modified startle
264	1	b Elsevier,c 2017
338		a print2 rdacarrier
500		a Funding agency:NIMH, R01 MH58354, K02 MH01114-08
520		a Startle reflex and affect-modified startle reflex are used as indicators of defensive reactivity and emotional processing, respectively. The present study investigated the heritability of both the startle blink reflex and affect modification of this reflex in a community sample of 772 twins ages 14–15 years old. Subjects were shown affective picture slides falling in three valence categories: negative, positive and neutral; crossed with two arousal categories: high arousal and low arousal. Some of these slides were accompanied with a loud startling noise. Results suggestedsex differences in meanlevels of startle reflex as well as in proportions of variance explained by genetic and environmental factors. Females had higher mean startle blink amplitudes for each valence-arousal slide category, indicating greater baseline defensive reactivity compared to males. Startle blink reflex in males was significantly heritable (49%), whereas in females, variance was explained primarily by shared environmental factors (53%) and non-shared environmental factors (41%). Heritability of affect modified startle (AMS) was found to be negligible in both males and females. These results suggest sex differences in the etiology of startle reactivity, while questioning the utility of the startle paradigm for understanding the genetic basis of emotional processing.
650	7	a SAMHÄLLSVETENSKAPx Psykologi0 (SwePub)5012 hsv//swe
650	7	a SOCIAL SCIENCESx Psychology0 (SwePub)5012 hsv//eng
650	7	a NATURVETENSKAPx Biologix Evolutionsbiologi0 (SwePub)106152 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Evolutionary Biology0 (SwePub)106152 hsv//eng
650	7	a MEDICIN OCH HÄLSOVETENSKAPx Klinisk medicinx Neurologi0 (SwePub)302072 hsv//swe
650	7	a MEDICAL AND HEALTH SCIENCESx Clinical Medicinex Neurology0 (SwePub)302072 hsv//eng
653		a Startle blink reflex; Heritability; Genetic; Environmental
653		a affect modification
653		a Psychology
653		a Psykologi
700	1	a Tuvblad, Catherine,d 1968-u Örebro universitet,Institutionen för juridik, psykologi och socialt arbete,Department of Psychology, University of Southern California, Los Angeles, USA4 aut0 (Swepub:oru)ctd
700	1	a Dawson, Michaelu Department of Psychology, University of Southern California, Los Angeles, USA4 aut
700	1	a Raine, Adrianu Departments of Criminology, Psychiatry, and Psychology, University of Pennsylvania, Philadelphia PA, USA4 aut
700	1	a Baker, Laura A.u Department of Psychology, University of Southern California, Los Angeles, USA4 aut
710	2	a Department of Psychology, University of Southern California, Los Angeles, USAb Institutionen för juridik, psykologi och socialt arbete4 org
773	0	t International Journal of Psychophysiologyd : Elsevierg 115, s. 57-64q 115<57-64x 0167-8760x 1872-7697
856	4	u https://europepmc.org/articles/pmc5362355?pdf=render
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-55064
856	4 8	u https://doi.org/10.1016/j.ijpsycho.2016.09.009

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Av författaren/redakt...: Dhamija, Devika; Tuvblad, Catheri ...; Dawson, Michael; Raine, Adrian; Baker, Laura A.

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SAMHÄLLSVETENSKAP: SAMHÄLLSVETENSKA ...; och Psykologi

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Av lärosätet: Örebro universitet

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