Browsing by Author "Tülay, Elif"
Now showing items 1-20 of 21
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A comparative analysis of sensory visual evoked oscillations with visual cognitive event related oscillations in Alzheimer's disease
Yener, Görsev G.; Güntekin, Bahar; Tülay, Elif; Başar, Erol (ELSEVIER IRELAND LTD, ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND, 2009-09-25)We compared visual evoked oscillatory responses of subjects with Alzheimer's disease (AD) (n = 22) to healthy elderly controls (n = 19) elicited by simple light stimuli. The visual evoked oscillatory responses in AD subjects ... -
A comparative study of auditory and visual event related coherences
Başar, Erol; Tülay, Elif; Turp Gölbaşı, Bilge; Güntekin, Bahar (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2012-09) -
Affective pictures processing is reflected by an increased long-distance EEG connectivity
Güntekin, Bahar; Femir, Banu; Turp Gölbaşı, Bilge; Tülay, Elif; Başar, Erol (Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands, 2017-08)Analysis of affective picture processing by means of EEG has invaded the literature. The methodology of event-related EEG coherence is one of the essential methods used to analyze functional connectivity. The aims of the ... -
Best method for analysis of brain oscillations in healthy subjects and neuropsychiatric diseases
Başar, Erol; Turp Gölbaşı, Bilge; Tülay, Elif; Aydın, Serap; Başar Eroğlu, Canan (Elsevier Science Bv, Po Box 211, 1000 AE Amsterdam, Netherlands, 2016-05)The research related to brain oscillations and their connectivity is in a new take-off trend including the applications in neuropsychiatric diseases. What is the best strategy to learn about functional correlation of ... -
Brain's alpha activity is highly reduced in euthymic bipolar disorder patients
Başar, Erol; Güntekin, Bahar; Turp Gölbaşı, Bilge; Atagün, Murat İlhan; Özerdem, Ayşegül; Tülay, Elif (Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands, 2012-02)Brain's alpha activity and alpha responses belong to major electrical signals that are related to sensory/cognitive signal processing. The present study aims to analyze the spontaneous alpha activity and visual evoked alpha ... -
Brain's Gamma Oscillations in Multiple Time and Frequency Windows. Functional Correlates and Cognitive Impairment
Başar, Erol; Tülay, Elif; Güntekin, Bahar (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 Usa, 2014-05) -
Brain's oscillatory responses in perception of emotional pictures
Güntekin, Bahar; Tülay, Elif; Turp Gölbaşı, Bilge; Başar, Erol (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2014-11) -
Decrease of Alpha/Beta Ratio in EEG Activity in Drug Free Euthymic Bipolar Patients
Başar, Erol; Tülay, Elif; Özerdem, Ayşegül; Atagün, Murat İlhan; Güntekin, Bahar (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 Usa, 2012-04-15) -
Decrease of Auditory Event Related Delta Oscillatory Responses in Patients with Alzheimer Type of Dementia
Yener, Görsev G.; Güntekin, Bahar; Necioğlu, Dilek; Tülay, Elif; Başar, Erol (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 USA, 2011-05-01) -
Eeg event related coherence during affective picture viewing
Güntekin, Bahar; Femir, Banu; Turp Gölbaşı, Bilge; Tülay, Elif; Başar, Erol (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 USA, 2015-05-01) -
Event Related Beta and Gamma Oscillations in Perception of Affective Pictures
Güntekin, Bahar; Tülay, Elif; Turp Gölbaşı, Bilge; Başar, Erol (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 Usa, 2014-05-01) -
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 ... -
Evoked And Event Related Coherence Of Alzheimer Patients Manifest Differentiation Of Sensory-Cognitive Networks
Başar, Erol; Güntekin, Bahar; Tülay, Elif; Yener, Görsev G. (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2010-10-21)In previous studies on Alzheimer's patients it was shown that, in frontal and parietal locations, delta and theta responses of AD patients were greatly reduced. The present study analyzed coherence functions in these highly ... -
Increase of Beta Response upon Application of Lithium in Euthymic Bipolar Patients
Tan, Devran; Özerdem, Ayşegül; Güntekin, Bahar; Atagün, Murat İlhan; Tülay, Elif; Karadağ, Figen; Başar, Erol (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 USA, 2011-05-01) -
Increase of EEG functional connectivity during emotional picture processing
Güntekin, Bahar; Femir, Banu; Turp Gölbaşı, Bilge; Tülay, Elif; Başar, Erol (Wiley-Blackwell, 111 River St, Hoboken 07030-5774, Nj Usa, 2015-09) -
Increased Beta Frequency (15-30 Hz) Oscillatory Responses in Euthymic Bipolar Patients Under Lithium Monotherapy
Tan, Devran; Özerdem, Ayşegül; Güntekin, Bahar; Atagün, Murat İlhan; Tülay, Elif; Karadağ, Figen; Başar, Erol (Sage Publications Inc, 2455 Teller Rd, Thousand Oaks, Ca 91320 USA, 2016-04)The effect of lithium on neurocognition is not still fully explored. Brain oscillatory activity is altered in bipolar disorder. We aimed to assess the oscillatory responses of euthymic bipolar patients and how they are ... -
Lithium Excessively Enhances Alpha and Beta Oscillatory Responses in Bipolar Disorder
Atagün, Murat İlhan; Güntekin, Bahar; Tan, Devran; Tülay, Elif; Başar, Erol (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 Usa, 2013)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 from resting-state ... -
Multiple gamma oscillations in the brain: A new strategy to differentiate functional correlates and P300 dynamics
Başar, Erol; Tülay, Elif; Güntekin, Bahar (Elsevıer Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlandi, 2015-03)Brain oscillations in the gamma frequency band, - i.e. oscillations greater than 25 Hz - have attracted increasing attention over the last few decades in the research of sensory-cognitive processes. In the neuroscience ... -
Significant decrease of EEG alpha activity and visual-evoked alpha response in bipolar patients
Başar, Erol; Güntekin, Bahar; Atagün, Murat İlhan; Tülay, Elif; Özerdem, Ayşegül (Elsevier Science Bv, Po Box 211, 1000 AE Amsterdam, Netherlands, 2010-09) -
Visual sensory evoked oscillations in Alzheimer patients
Yener, Görsev G.; Güntekin, Bahar; Tülay, Elif; Başar, Erol (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 USA, 2009-04-15)