[The neuronal reactions of the reticular nucleus of the human thalamus to verbal and sensory stimuli of differing signal strengths]. / Reaktsii neironov retikuliarnogo iadra talamusa mozga cheloveka pri rechevykh i sensornykh vozdeistviiakh razlichnoi signal'noi znachimosti.
Neirofiziologiia
; 22(4): 441-51, 1990.
Article
en Ru
| MEDLINE
| ID: mdl-2284021
Responses of 340 single units of the n. Rt of the human thalamus to significant and insignificant verbal and sensory stimuli during the performance of voluntary motor acts recorded by microelectrodes were investigated in dyskinetic patients in the course of 46 stereotaxic operations. Two types of polymodal units with irregular continuous (A-type, "triggered verbal command" units, 183 neurons, 56% reacting) and burst rhythmic (2-5 per s.) discharges (B-type, 139 neurons, 59% reacting) have revealed reactivity to a verbal command with a specialized multicomponent pattern at functionally different stages of purposive motor acts. The analysis of principal components has shown that the extracted components of responses correlated with the functional significance of verbal or sensory signals, especially with voluntary acts of the verbal message triggering, but not with physical, somatotopic or semantic parameters of stimulation. It was suggested that the transient time-connectivity of A and B neurons at the trigger stages of purposive tasks reflected the coexistence in the Rt of two functionally different cellular subsystems participating in the transmission of significant signals during speech-provoked voluntary acts.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sensación
/
Núcleos Talámicos
/
Conducta Verbal
/
Neuronas
Límite:
Humans
Idioma:
Ru
Revista:
Neirofiziologiia
Año:
1990
Tipo del documento:
Article
Pais de publicación:
Ucrania