| Autor: |
Varlamov, A. A., Skorokhodov, I. V., Portnova, G. V. |
| Předmět: |
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| Zdroj: |
Neuroscience & Behavioral Physiology; May2021, Vol. 51 Issue 4, p458-465, 8p |
| Abstrakt: |
The development of experimental protocols for EEG studies to identify markers for deficits of attention is a relevant task in current neuropsychiatry. This report describes analysis of event-related potentials (ERP) and event-related changes in EEG rhythms on performance of a task with a rare target tone (2000 Hz, 10%) and a frequent nontarget tone (1500 Hz, 80%) and absences of physical stimuli (10%). The interstimulus interval (ISI) was fixed (1000 msec). This experimental task was found to produce highly significant effects for components of the brain's response linked with filtration of sensory information (significant increases in the amplitude of the ERP components P50, N100, and P200 to nontarget stimuli following missed stimuli, as well as concomitant transient increases in signal amplitude in the range from δ to α2) and a marked P50–N100–N200–P300 complex associated with voluntary attention (reactions to target stimuli). It is suggested that these experimental protocols may be used with success both in studies of the interaction between different aspects of attention and in studies of biomarkers for deficits in attention and sensory integration processes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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