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Psychophysiological and Operarive AEPs and SEPs Monitoring for Perception, Attention and Cognition
Auditory and somatosensory evoked potentials (AEPs and SEPs) in 14 patients with pathological processes of the brainstem and in 24 healthy subjects were recorded. The procedure of submission of relevant and deviant signals was used for stimulation and registration of evoked potentials. Key evoked potentials changes are as follows. Low amplitude of AEP in patients during a simple rhythmic stimulation generalized was registered. Mainly increasing of the middle latency AEP amplitude during activation of attention was observed. Amplitude increasing of the SEP late components in the central and frontal brain areas normally accompanied by a similar topomaps marked earlier (N30) waves. When pathology increased the amplitude of the field moved to the parietal and occipital cortex.