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.