The auditory evoked potentials (AEP) were recorded in 10 healthy subjects under the conditions of simple rhythmic stimulation and in an attention task. The mid- (10-60 msec) and long-latency (up to 400 msec) AEP were analyzed by mapping the evoked potentials and by assessment of their spatial-temporal characteristics. It is hypothesized that the interaction of the parietal and left-sided temporal and frontal divisions exert an efferent influence on the brainstem structures in the 15-35 msec time segment. The amplitude of the P90 and P250 waves is reduced in the attention task. The amplitude of the late component P350 increases mainly in the central and anterior divisions of the brain.

The aim of this study was the physiological substantiation of express algo-rithms for assessing cognitive functions according to the data of clinical, psy-chological and neurophysiological studies in conditions of time deficit. The in-tegrative indicator SCL-90-R - \"general index of severity\" has a high statistical significance (p <0.05) in both healthy subjects and neuropsychiatric patients. The effectiveness of the \"Mini-Mult\" method in conditions of time deficit is de-termined by the results of the scales of hypochondria, depression, hysteria, par-anoia, psychasthenia, schizoid and hypomania (p <0.05). We also used a block of logical techniques. A similar survey for 15 - 25 min can be used as a stand-ard for assessing neurocognitive status in screening studies of large groups. EEG power indices and spectra in theta, delta and alpha frequency ranges are an effective reflection of mental status.

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The recording of cerebral evoked potentials (EPs) has had a rich history. At the same time, the neuromapper computer produced in the last 10 years increased the possibility of looking into a living brain. These advances were the basis for neuroimaging, neurovisualization, and neuromapping studies. On the one hand, the results of such studies are contradictory, but on the other, these methods are relatively inexpensive compared to computerized tomography, magnetic resonance imaging (or tomography), positron emission tomography, and the like, and they are totally noninvasive.*-'The present study estimates the diagnostic significance of EP mapping and the functional significance of the cortical structure in vascular lesions.