Affective attitudes to face images associated with intracerebral EEG source location before face viewing


Autoria(s): Pizzagalli, Diego; Koenig, Thomas; Regard, Marianne; Lehmann, Dietrich
Data(s)

1999

Resumo

We investigated whether different, personality-related affective attitudes are associated with different brain electric field (EEG) sources before any emotional challenge (stimulus exposure). A 27-channel EEG was recorded in 15 subjects during eyes-closed resting. After recording, subjects rated 32 images of human faces for affective appeal. The subjects in the first (i.e., most negative) and fourth (i.e., most positive) quartile of general affective attitude were further analyzed. The EEG data (mean=25±4.8 s/subject) were subjected to frequency-domain model dipole source analysis (FFT-Dipole-Approximation), resulting in 3-dimensional intracerebral source locations and strengths for the delta–theta, alpha, and beta EEG frequency band, and for the full range (1.5–30 Hz) band. Subjects with negative attitude (compared to those with positive attitude) showed the following source locations: more inferior for all frequency bands, more anterior for the delta–theta band, more posterior and more right for the alpha, beta and 1.5–30 Hz bands. One year later, the subjects were asked to rate the face images again. The rating scores for the same face images were highly correlated for all subjects, and original and retest affective mean attitude was highly correlated across subjects. The present results show that subjects with different affective attitudes to face images had different active, cerebral, neural populations in a task-free condition prior to viewing the images. We conclude that the brain functional state which implements affective attitude towards face images as a personality feature exists without elicitors, as a continuously present, dynamic feature of brain functioning.

Formato

application/pdf

Identificador

http://boris.unibe.ch/39754/1/Affective%20Attitudes%201999%20Cogn%20Brain%20Res.pdf

Pizzagalli, Diego; Koenig, Thomas; Regard, Marianne; Lehmann, Dietrich (1999). Affective attitudes to face images associated with intracerebral EEG source location before face viewing. Cognitive brain research, 7(3), pp. 371-377. Elsevier 10.1016/S0926-6410(98)00040-8 <http://dx.doi.org/10.1016/S0926-6410(98)00040-8>

doi:10.7892/boris.39754

info:doi:10.1016/S0926-6410(98)00040-8

info:pmid:9838196

urn:issn:0926-6410

Idioma(s)

eng

Publicador

Elsevier

Relação

http://boris.unibe.ch/39754/

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Pizzagalli, Diego; Koenig, Thomas; Regard, Marianne; Lehmann, Dietrich (1999). Affective attitudes to face images associated with intracerebral EEG source location before face viewing. Cognitive brain research, 7(3), pp. 371-377. Elsevier 10.1016/S0926-6410(98)00040-8 <http://dx.doi.org/10.1016/S0926-6410(98)00040-8>

Palavras-Chave #610 Medicine & health
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed