J 2018

Amygdala reactivity and connectivity during social and non-social aversive stimulation in social anxiety disorder

KRAUS, Jakub, Andreas FRICK, Håkan FISCHER, Katarina HOWNER, Mats FREDRIKSON et. al.

Základní údaje

Originální název

Amygdala reactivity and connectivity during social and non-social aversive stimulation in social anxiety disorder

Autoři

KRAUS, Jakub (703 Slovensko, garant, domácí), Andreas FRICK (752 Švédsko), Håkan FISCHER (752 Švédsko), Katarina HOWNER (752 Švédsko), Mats FREDRIKSON (752 Švédsko) a Tomas FURMARK (752 Švédsko)

Vydání

PSYCHIATRY RESEARCH-NEUROIMAGING, Clare, Elsevier Ireland, 2018, 0925-4927

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30215 Psychiatry

Stát vydavatele

Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.270

Kód RIV

RIV/00216224:14110/18:00103532

Organizační jednotka

Lékařská fakulta

UT WoS

000443824900008

Klíčová slova anglicky

Social phobia; Emotional faces; International Affective Picture System; IAPS; fMRI; Fear

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 11. 3. 2019 15:29, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

Social anxiety disorder (SAD) is characterized by exaggerated amygdala reactivity in response to symptom provocation, but it is unclear if such hyper-reactivity is elicited by disorder-specific challenges only or characterizes reactions to aversive stimuli in general. Here, using functional magnetic resonance imaging in 14 patients with SAD, as compared to 12 healthy controls, we found that amygdala hyper-reactivity is confined to disorder-relevant social stimulation. SAD patients displayed increased amygdala reactivity to fearful as compared to neutral facial pictures, but not in response to generally aversive but mainly non-social stimulation when compared to neutral pictorial stimuli taken from the International Affective Picture System. The increased amygdala reactivity was not mediated by an altered prefrontal inhibition among SAD patients as compared to controls, suggesting increased bottom-up processes rather than attenuated top-down control. In conclusion, the enhanced amygdala reactivity in SAD seems specific to socially relevant stimuli rather than aversive stimuli in general.