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Biomedical subjects

V M Vasil'eva

Publications and source records attributed to V M Vasil'eva.

At least 19 recordsLinked to original sources
PubMed1986

[Characteristics of information recall during 2d-stage human sleep].

Two combinations of numbers (6-2, 6-8) and a single number 6 were given to 6 examinee before sleep, they were asked to react on the ratio of numbers in complex more--less (6-2). During stage 2 sleep unknown numbers and their combinations (5-3, 5-7 and number 5) with the same relationship were presented. The frequency of evoked EEG-responses didn't correspond to the reactions during waking, but reflected the quantitative meanings of the numbers presented. Additional series of experiments with 25 examinee during waking (presented variants of numbers 5-3, 5-7 and 5 with request to react selectively on one of the combinations) showed the primary reaction on the combination "minor number--major number" analogous to the results obtained during sleep. It is suggested that the level of integrative brain activity during sleep promotes the adequate response only in the case when it is the result of more automatized reactions of examinee on usual order of number, i.e. ascending order of numbers.

Acoustic Stimulation↗
PubMed1984

[Reactivity of the sleeping human brain: motor and electro-encephalographic correlates of evoked reactions].

Human brain reactivity during sleep has been studied. Complex stimuli: auditory stimulus 1 s--interstimulus interval 4 s--verbal instruction to clench one's fist were presented to human subjects at equal 30-second intervals throughout all night's sleep. Conditioned motor and EEG responses were elicited during the second and the third experimental nights by repeating only auditory stimuli at 30- or 15-second intervals respectively. It has been suggested that a short-term memory store functions during sleep for at least 30 s after presenting stimuli.

Acoustic Stimulation↗
PubMedDate not supplied

[Motor conditioned reactions at different stages of normal human nocturnal sleep and their electrographic correlates].

Motor conditioned reaction was studied at different sleep phases in 13 subjects by EMG and mechanogram parameters compared to SGR and EEG. During paradoxical phase motor conditioned reaction appeared more often than in the slow-wave sleep, but in a reduced form. At various sleep stages the motor conditioned reaction regularly appeared at the background of the rise in the level of cortical functional state before conditioned stimulus. At all sleep stages completed motor reaction is fixed in the consciousness. However, amnesia of conditional stimulus perception and of motor reaction to it is rapidly developed, in particular in the slow-wave phase.

Adolescent↗