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Brain Oscillations Differentiate the Picture of One's Own Grandmother

Thumbnail
Author
Başar, Erol
Özgören, Murat
Öniz, Adile
Schmiedt, Christina
Başar-Eroğlu, Canan
Type
Article
Date
2007-04
Language
en_US
Metadata
Show full item record
Abstract
The present report introduces, as a first study, the concept and methods of oscillatory brain dynamics to analyze well-known (familiar) and unfamiliar face processing in the 800 ms following a face presentation. We analyzed event-related oscillations in young, healthy subjects (N=26) by using three types of stimulation: (1) a simple light signal, (2) the picture of the face of an anonymous elderly lady and (3) the picture of the subjects' own grandmother. We found a number of significant peak to peak amplitude measures in all frequency bands in the time period of 0-500 ms, allowing a differentiation between perception of the subjects' own grandmother, the unknown elderly face and the light stimulation. The results showed increased event-related oscillatory responses elicited by the unknown face compared to the known grandmother a) in the theta responses (4-8 Hz) at T-6 (46%), b) in the gamma (28-48 Hz) responses at C-z (22%) and C-3 (38%) and c) in the beta responses at F-4 (46%), C-z (47%) and P-3 (105%). In contrast, the subjects' own grandmother elicited 20% increased fast theta (6-8 Hz) oscillations at F-4 compared to the unknown face. Delta responses dissociated face from simple light processing, as reflected in the observation of approx. 50% higher amplitudes at the occipital compared to the frontal locations during face perception. We conclude that the described multiple brain oscillations clearly differentiate the known and unknown faces with varied degrees of selective-responsiveness in a short time window between 0 and 800 ms. Furthermore, the results are in conceptual accordance with the "selectively distributed processing" hypothesis. (c) 2006 Published by Elsevier B.V.
Subject
Delta
Theta
Alpha
Beta
Gamma Oscillations
EEG
ERP
Face Recognition
Semantic
Episodic
Memory
Working Memory
NeurocognitiveNetworks
Fusiform Gyrus
Beta Frequency
Visual Cortex
Alpha Band
Human EEG
Responses
Gamma
Teta
Alfa
Gama Salınımları
Yüz Tanıma
Anlamsal
Aralıklı
Bellek
Çalışan Bellek
Bilişsel Ağlar
Beta Frekansı
Görsel Korteks
Alfa Bant
İnsan EEG
Tepkiler
Gama
URI
http://hdl.handle.net/11413/1049
Collections
  • Makaleler / Articles [147]
  • Pubmed Publications [149]
  • Scopus Publications [724]
  • WoS Publications [1016]

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Hakkında |Politika | Kütüphane | İletişim | Send Feedback | Admin

Istanbul Kültür University, Ataköy Campus E5 Karayolu Üzeri Bakırköy 34158, İstanbul / TURKEY
Copyright © İstanbul Kültür University

Creative Commons Lisansı
IKU Institutional Repository, Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

Designed by  UNIREPOS