Results 31 to 40 of about 753,295 (290)

Deficits in high- (>60 Hz) gamma-band oscillations during visual processing in schizophrenia [PDF]

, 2013
Current theories of the pathophysiology of schizophrenia have focused on abnormal temporal coordination of neural activity. Oscillations in the gamma-band range (>25 Hz) are of particular interest as they establish synchronization with great precision in
Maurer, Konrad, Grützner, Christine, Limin eSun, Wolf Singer, Davide Rivolta, Uhlhaas, Peter J., Michael eWibral, Christine Grützner, Sun, Limin, Konrad Maurer, Davide eRivolta, Singer, Wolf, Maurer, K., Konrad eMaurer, Uhlhaas, P.J., GrÃ1⁄4tzner, Christine, Limin Sun, Uhlhaas, P., Rivolta, Davide, Singer, W. ; https://orcid.org/, Christine Grützner, Rivolta, D., Peter eUhlhaas, Sun, L., Wibral, Michael, Wibral, M., Christine eGruetzner, Wolf eSinger, Michael Wibral, Grützner, C., Peter J. Uhlhaas, Singer, W.   +31 more
core   +1 more source

A computational study on altered theta-gamma coupling during learning and phase coding [PDF]

, 2012
There is considerable interest in the role of coupling between theta and gamma oscillations in the brain in the context of learning and memory. Here we have used a neural network model which is capable of producing coupling of theta phase to gamma ...
Yang Zhan, Haifu Zhou (157350), Zhang Xuejuan, Kendrick Keith M., Zhan Yang, Kendrick, Keith M., Xuejuan Zhang, Zhang, Xuejuan, Zhou Haifu, Jianfeng Feng (48703), Xuejuan Zhang (157336), Zhan, Yang, Keith M. Kendrick (157342), Zhou, Haifu, Haifu Zhou, Yang Zhan (157356), Feng, Jianfeng, Jianfeng Feng, Keith M Kendrick, Feng Jianfeng   +19 more
core   +2 more sources

Decrease in early right alpha band phase synchronization and late gamma band oscillations in processing syntax in music [PDF]

, 2009
The present study investigated the neural correlates associated with the processing of music-syntactical irregularities as compared with regular syntactic structures in music.
Bhattacharya, J., Koelsch, Stefan, Bhattacharya, Joydeep, Ruiz, M., Ruiz, Maria Herrojo, Koelsch, S., Herrojo Ruiz, Maria   +6 more
core   +1 more source

Experimental Measurements and Computer Simulation of Fission Product Gamma-Ray Spectra [PDF]

, 1997
Airborne gamma ray spectrometry using high volume scintillation detectors, optionally in conjunction with Ge detectors, has potential for making rapid environmental measurements in response to nuclear accidents. An experimental investigation and computer
Sanderson, D.C.W., McConville, P., Department of the Environment, Transport and the Regions: Radioactive Substances Division, Cresswell, A., Allyson, J.D.   +4 more
core   +8 more sources

Energy substrates that fuel fast neuronal network oscillations

Frontiers in Neuroscience, 2014
Fast neuronal network oscillations in the gamma-frequency band (30-100 Hz) provide a fundamental mechanism of complex neuronal information processing in the hippocampus and neocortex of mammals.
Lukas V. Galow, Justus eSchneider, Andrea eLewen, Thuy-Truc eTa, Ismini E. Papageorgiou, Oliver eKann   +5 more
doaj   +1 more source

Alterations of auditory-evoked gamma oscillations are more pronounced than alterations of spontaneous power of gamma oscillation in early stages of schizophrenia

Translational Psychiatry, 2023
Several animal models of schizophrenia and patients with chronic schizophrenia have shown increased spontaneous power of gamma oscillations. However, the most robust alterations of gamma oscillations in patients with schizophrenia are reduced auditory ...
Mariko Tada, Kenji Kirihara, Daisuke Koshiyama, Tatsuya Nagai, Mao Fujiouka, Kaori Usui, Yoshihiro Satomura, Shinsuke Koike, Kingo Sawada, Jun Matsuoka, Kentaro Morita, Tsuyoshi Araki, Kiyoto Kasai   +12 more
doaj   +1 more source

Tinnitus intensity dependent gamma oscillations of the contralateral auditory cortex. [PDF]

, 2009
Non-pulsatile tinnitus is considered a subjective auditory phantom phenomenon present in 10 to 15% of the population. Tinnitus as a phantom phenomenon is related to hyperactivity and reorganization of the auditory cortex.
Congedo Marco, Gais, Steffen, Tomas Menovsky, Vanneste Sven, Marco Congedo, Menovsky, Tomas, Steffen Gais, De Ridder, Dirk, Van de Heyning, Paul, Van de Heyning Paul, Congedo, Marco, Elsa van der Loo, van der Loo, Elsa, Plazier, Mark, Menovsky Tomas, Sven Vanneste, Mark Plazier, Dirk De Ridder, Gais Steffen, De Ridder Dirk, Paul Van de Heyning, van der Loo Elsa, Plazier Mark, Vanneste, Sven   +23 more
core   +1 more source

Gamma flicker triggers attentional selection without awareness [PDF]

, 2009
Gamma band modulations in neural activity have been proposed to mediate attentional processes. To support a causal link between gamma activity and attentional selection, we attempt to evoke gamma oscillations by a 50-Hz subliminal flicker. We find that a
Usher, Marius, Cheadle, SW, Muller, Hermann J., Parton, A., Parton, A, Müller, HJ, Bauer, F., Bauer, F, Cheadle, Samuel, Mueller, HJ, Usher, M   +10 more
core   +1 more source

Impaired In Vivo Gamma Oscillations in the Medial Entorhinal Cortex of Knock-in Alzheimer Model

Frontiers in Systems Neuroscience, 2017
The entorhinal cortex (EC) has bidirectional connections with the hippocampus and plays a critical role in memory formation and retrieval. EC is one of the most vulnerable regions in the brain in early stages of Alzheimer’s disease (AD), a ...
Tomoaki Nakazono, Tomoaki Nakazono, Travis N. Lam, Travis N. Lam, Ayushi Y. Patel, Ayushi Y. Patel, Masashi Kitazawa, Takashi Saito, Takaomi C. Saido, Kei M. Igarashi, Kei M. Igarashi, Kei M. Igarashi   +11 more
doaj   +1 more source

NMDA receptor hypofunction leads to generalized and persistent aberrant gamma oscillations independent of hyperlocomotion and the state of consciousness. [PDF]

PLoS ONE, 2009
BACKGROUND:The psychotomimetics ketamine and MK-801, non-competitive NMDA receptor (NMDAr) antagonists, induce cognitive impairment and aggravate schizophrenia symptoms.
Tahir Hakami, Nigel C Jones, Elena A Tolmacheva, Julien Gaudias, Joseph Chaumont, Michael Salzberg, Terence J O'Brien, Didier Pinault   +7 more
doaj   +1 more source