Prefrontal cortex hypoactivity distinguishes severe from mild-to-moderate social anxiety as revealed by a palm-sized near-infrared spectroscopy system.
J Neural Transm (Vienna)
; 127(9): 1305-1313, 2020 09.
Article
em En
| MEDLINE
| ID: mdl-32638118
ABSTRACT
The purpose of this study was to compare prefrontal cortex (PFC) activity among subjects with differing social anxiety (SA) severity levels to identify a possible biomarker for severe SA. Further, SA is generally under-diagnosed, so we examined if such measurements could be acquired conveniently, non-invasively, and at low cost using a portable near-infrared spectroscopy (NIRS) system. We classified 96 participants into three groups based on Liebowitz Social Anxiety Scale (LSAS) total score Low SA (LSA, n = 40), Moderate SA (MSA, n = 39), and High SA (HSA, n = 17). We compared the prefrontal hemodynamic responses among LSAS severity groups during a verbal fluency task using a palm-sized NIRS system. The HSA group exhibited a significantly lower hemodynamic response in the left PFC compared to LSA and MSA groups, whereas there was no significant difference between LSA and MSA groups. There was also no significant difference in the right PFC hemodynamic response among groups. Differences in the severity of SA symptoms may be related to the left PFC function. Low PFC activity during specific cognitive tasks may provide a biomarker for distinguishing severe from mild/moderate SA symptoms to guide subsequent therapeutic decisions.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Córtex Pré-Frontal
/
Espectroscopia de Luz Próxima ao Infravermelho
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article