EEG power spectral measurements comparing normal and "thatcherized" faces.
In this paper we have made a broadband analysis to detect the electroencephalogram (EEG) frequencies that change selectively during the presentation of normal and "thatcherized" faces. Referential recordings to linked ears were obtained in 21 leads in 48 right-handed healthy male volunteers. Increase of delta power (1.75-3.91 Hz) was observed, related to the detection of distortion in faces at bifrontal and left temporoparietal cortex. The other bands had no contribution, when normal and modified faces were compared. These results support our hypothesis that a change in EEG power spectral may be related to discrimination between normal and thatcherized faces.
Gersenowies
Jorge
J
Neuroscience Department, National Autonomous University of Mexico, UNAM, FES Iztacala, México. jrgersenowies@hotmail.com
Marosi
Erzsebet
E
Cansino
Selene
S
Rodriguez
Mario
M
D000328:Adult; D000704:Analysis of Variance; D002540:Cerebral Cortex / Q000502:physiology*; D004569:Electroencephalography; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005145:Face; D006801:Humans; D008297:Male; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D012815:Signal Processing, Computer-Assisted; D013057:Spectrum Analysis / Q000379:methods; D055815:Young Adult