[Phenomenon of masking in the reproduction of tactile signals].
The study of central masking and of its mechanisms is of interest in connection with the problem of transmitting information through the cutaneous communication channel. The subjects were children aged from seven to eight and from thirteen to fourteen with normal hearing, as well as deaf children. Latency and errors to localizing signals from isolated or paired action of four vibrators were determined in three series of experiments, using three, six and ten altenatives. A dependence of the precision of localization on the amount of information has been found: deteriorated identification is more pronounced in junior schoolchildren and in those with abnormal development. Matrices of the errors provide material for plottingildterial for plotting charts of convergence of afferent inputs. To elucidate the mechanisms of central masking, a comparison was made between the results of psychophysical and microphysiological experiments. Data analysis leads to the conslusion that the phenomenon of masking is determined by two factors: (1) the nature of the convergence of afferent inputs on the neuronal brain structures; (2) the level of formation of psychic operations which provide for singling out distinctive characteristics of signals, with subsequent decision regarding the certain class to which they belong, and with their recognition.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D003638:Deafness / Q000503:physiopathology*; D005071:Evoked Potentials; D006801:Humans; D009044:Motor Cortex / Q000502:physiology; D009430:Neural Analyzers / Q000502:physiology* / Q000503:physiopathology; D010470:Perceptual Masking / Q000502:physiology*; D013003:Somatosensory Cortex / Q000502:physiology; D014110:Touch / Q000502:physiology*; D014732:Vibration
Fenomen maskirovki pri vospriiatii taktil'nykh signalov