Dissecting gamma frequency activity during human memory processing
نویسندگان
چکیده
منابع مشابه
Dissecting gamma frequency activity during human memory processing.
Gamma frequency activity (30-150 Hz) is induced in cognitive tasks and is thought to reflect underlying neural processes. Gamma frequency activity can be recorded directly from the human brain using intracranial electrodes implanted in patients undergoing treatment for drug-resistant epilepsy. Previous studies have independently explored narrowband oscillations in the local field potential and ...
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Intracranial high-frequency activity (HFA), which refers to fast fluctuations in electrophysiological recordings, increases during memory processing. Two views have emerged to explain this effect: (1) HFA reflects a synchronous signal, related to underlying gamma oscillations, that plays a mechanistic role in human memory and (2) HFA reflects an asynchronous signal that is a non-specific marker...
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Both theoretical and experimental animal work supports the hypothesis that transient oscillatory synchronization of neuronal assemblies at gamma frequencies (30-100 Hz) is closely associated with sensory processing. Recent data from recordings in animals and humans have suggested that gamma-frequency activity also has an important role in attention and both working and long-term memory. The inv...
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1. Mayo Clinic, Dept. of Neurology, Mayo Systems Electrophysiology Laboratory (MSEL) Rochester MN, USA 2. Mayo Clinic, Department of Physiology & Biomedical Engineering, Rochester MN, USA 3. Czech Institute of Informatics, Robotics and Cybernetics, Czech Technical University in Prague, Czech Republic 4. University of Pennsylvania, Dept. of Psychology, Philadelphia PN, USA 5. University of Penns...
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Previous magnetoencephalography (MEG) studies have revealed gamma-band activity at sensors over parietal and fronto-temporal cortex during the delay phase of auditory spatial and non-spatial match-to-sample tasks, respectively. While this activity was interpreted as reflecting the memory maintenance of sound features, we noted that task-related activation differences might have been present alr...
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ژورنال
عنوان ژورنال: Brain
سال: 2017
ISSN: 0006-8950,1460-2156
DOI: 10.1093/brain/awx043