Now showing items 1-7 of 7

    • Emotional Face Expressions are Differentiated With Brain Oscillations 

      Güntekin, Bahar; Başar, Erol (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2007-04)
      The differentiation of "facial expressions" is a process of higher mental activity, which has considerable applications in "psychology of moods and emotions". We applied the approach of event-related oscillations (EROs) ...
    • Event related beta and gamma oscillatory responses during perception of affective pictures 

      Güntekin, Bahar; Tülay, Elif (Elsevier Science Bv, Sara Burgerhartstraat 25, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2014-08-19)
      Several studies reveal that unpleasant pictures elicit higher beta and gamma responses than pleasant and/or neutral pictures; however, the effect of stimulation design (block or random) has not been studied before. The aim ...
    • Gender Differences Influence Brain's Beta Oscillatory Responses in Recognition of Facial Expressions 

      Güntekin, Bahar; Başar, Erol (ELSEVIER IRELAND LTD, ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND, 2007-09-07)
      There are only few studies describing gender differences in recognition of facial expressions. Our study has the aim to analyze the effect of gender differences in oscillatory brain responses. Three sets of Ekman and ...
    • Lithium excessively enhances event related beta oscillations in patients with bipolar disorder 

      Atagün, Murat İlhan; Güntekin, Bahar; Tan, Devran; Tülay, Emine Elif; Başar, Erol (Elsevier Science Bv, Po Box 211, 1000 AE Amsterdam, Netherlands, 2015-01-01)
      Background: Previous resting-state electroencephalography studies have consistently shown that lithium enhances delta and theta oscillations in default mode networks. Cognitive task based networks differ horn resting-state ...
    • Reduced long distance gamma (28-48 Hz) coherence in euthymic patients with bipolar disorder 

      Özerdem, Ayşegül; Güntekin, Bahar; Atagün, İlhan; Turp, Bilge; Başar, Erol (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2011-08)
      Background: EEG coherence represents the brain's functional connectivity. Synchronous neural gamma oscillations are critical for cortico-cortical communication and large-scale integration of distributed sets of neurons. ...
    • Reduced Visual Event-Related Delta Oscillatory Responses in Amnestic Mild Cognitive Impairment 

      Yener, Görsev; Kurt, Pınar; Emek Savaş, Derya Durusu; Güntekin, Bahar; Başar, Erol (Ios Press, Nieuwe Hemweg 6B, 1013 Bg Amsterdam, Netherlands, 2013)
      Mild cognitive impairment (MCI) is considered as a prodromal stage for Alzheimer's disease (AD) in the majority of cases. Event-related oscillations might be used for detection of cognitive deficits. Our group's earlier ...
    • The Effect Of Noise And Parameter Mismatch On The Synchronization Of The Drive-Response Chaotic System 

      Antoniades, Ioannis P.; Miliou, Amalia N.; Stavrinides, Stavros G.; Anagnostopoulos, Antonios N. (İstanbul Kültür Üniversitesi Yayınları, 2006-12)
      We present a thorough investigation of the effect ofnoise (internal or extemal) on the synchronization of a drive-response configuration system (unidirectional coupling between two identIcal systems). Moreover, since in ...