Now showing items 1-17 of 17

    • A breakthrough in neuroscience needs a "Nebulous Cartesian System" Oscillations, quantum dynamics and chaos in the brain and vegetative system 

      Başar, Erol; Güntekin, Bahar (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2007-04)
      The Cartesian System is a fundamental conceptual and analytical framework related and interwoven with the concept and applications of Newtonian Dynamics. In order to analyze quantum processes physicist moved to a Probabilistic ...
    • A review of brain oscillations in cognitive disorders and the role of neurotransmitters 

      Başar, Erol; Güntekin, Bahar (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2008-10-15)
      The analysis of the functional correlates of "brain oscillations" has become an important branch of neuroscience. Although research on the functional correlates of brain oscillation has progressed to a high level, studies ...
    • A Short Review Of Alpha Activity In Cognitive Processes And In Cognitive Impairment 

      Başar, Erol; Güntekin, Bahar (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2012-10)
      Aim of the report: In the companion report (Basar, this volume), the physiological fundaments of alpha activity in integrative brain function are described. The present report is a review of the significant role of alpha ...
    • Auditory Delta Event-related Oscillatory Responses are Decreased in Alzheimer's Disease 

      Başar, Erol; Yener, Görsev; Güntekin, Bahar; Necioğlu Örken, Dilek; Forta, H. (Ios Press, Nieuwe Hemweg 6B, 1013 Bg Amsterdam, Netherlands, 2012)
      Background: Visual delta event-related (ERO) and evoked oscillations (EO) of Alzheimer patients (AD) are different than healthy. In the present study, the analysis is extented to include auditory ERO and EO in AD. The ...
    • Beta Oscillatory Responses in Healthy Subjects and Subjects with Mild Cognitive Impairment Upon Application of Stimuli with Cognitive Load 

      Başar, Erol; Güntekin, Bahar; Emek, Derya Durusu; Yener, Görsev; Kurt, Pınar (Elsevier Science Inc, 360 Park Ave South, New York, Ny 10010-1710 USA, 2013-05-01)
      The aim of the present study was to investigate the role of beta oscillatory responses upon cognitive load in healthy subjects and in subjects with mild cognitive impairment (MCI). The role of beta oscillations upon cognitive ...
    • Beyin-Beden-Zihin Etkileşiminde "Nebulöz Kartezyen Sistem" 

      Başar, Erol; Güntekin, Bahar (İstanbul Kültür Üniversitesi Yayınları, 2006-12)
      Rene Descartes 'in gelistirdigi Kartezyen Sistem "Newton 'un Dinamik Kurallari" ile ilintili ve iç içe geçmis olan temel bir kavramsal ve analitik sistemdir. Rönesans'tan itibaren modem bilimin youlunu açmistir. 20 inci ...
    • Brain oscillations are highly influenced by gender differences 

      Güntekin, Bahar; Başar, Erol (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2007-09)
      There are few studies describing gender differences in event related oscillations (EROS). In the present report we demonstrate that gender differences are apparent in EROS even during simple visual stimulation, possibly ...
    • Brain oscillations in bipolar disorder as emerging biomakers 

      Güntekin, Bahar; Özerdem, Ayşegül; Başar, Erol (Wiley-Blackwell, Commerce Place, 350 Main St, Malden 02148, Ma Usa, 2012-03)
    • Disturbance In Long Distance Gamma Coherence In Bipolar Disorder 

      Özerdem, Ayşegül; Güntekin, Bahar; Saatçı, Ertuğrul; Tunca, Zeliha; Başar, Erol (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2010-08-16)
      The aim of this study was to investigate long distance event-related gamma (28-48 Hz) coherence in mania before and after valproate monotherapy. Gamma coherence in response to visual oddball paradigm in ten medication-free, ...
    • 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 delta oscillatory responses of Alzheimer patients 

      Yener, Görsev; Güntekin, Bahar; Başar, Erol (WILEY-BLACKWELL, COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA, 2008-06)
      Background and purpose: Alzheimer type of dementia (AD) is the most common neuropsychiatric morbidity in elderly individuals. Event-related oscillations (ERO) provide an useful tool for detecting subtle abnormalities of ...
    • Facial Affect Manifested By Multiple Oscillations 

      Güntekin, Bahar; Başar, Erol (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2009-01)
      The present study describes electrophysiological differentiation of "Facial Expressions" by using the method of event-related oscillations (EROS). These measures were used to assess electrical manifestations of emotional ...
    • 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 ...
    • Links of consciousness, perception, and memory by means of delta oscillations of brain 

      Başar, Erol; Düzgün, Aysel (Frontiers Media Sa, Po Box 110, EPFL Innovation Park, Building I, Lausanne, 1015, Switzerland, 2016-03-10)
      The aim of this report is threefold: (1) First, we accomplish a survey integrating the description of consciousness, perception, and memory according to the views of descriptions of Hermann Helmholtz, Sigmund Freud, ...
    • Principles of oscillatory brain dynamics and a treatise of recognition of faces and facial expressions 

      Başar, Erol; Güntekin, Bahar; Öniz, Adile (ELSEVIER SCIENCE BV, SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2006)
      The research of event-related oscillations is one of fast-growing fields in neuroscience. In this study, a theory of the "whole-brain-work," which can be useful for functional interpretation of brain oscillations, is ...
    • Prolongation Of Alpha Oscillations İn Auditory Oddball Paradigm 

      Öniz, Adile; Başar, Erol (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2009-03)
      Although an important component of the P300 target response is the "prolonged alpha response". no relevant analysis is found in the literature. The present study emphasizes the relevance of prolongation of alpha responses ...
    • S-Matrix and Feynman Space-Time Diagrams to Quantum Brain Approach An Extended Proposal 

      Başar, Erol (Anka Publisher, 116-11 Sok No.10 K 2 D 2, Bornova, Izmir 35050, Turkey, 2009)
      This report describes the importance of oscillations in brain function and introduces metaphors to quantum dynamics. In order to analyze scattering processes at the level of elementary particles Werner Heisenberg proposed ...