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  • Title: [The subcortical neuronal correlates of human assessment actions].
    Author: Kropotov IuD, Ponomarev VA, Sevost'ianov AV, Trofimova LG, Kuznetsov MA.
    Journal: Zh Vyssh Nerv Deiat Im I P Pavlova; 1991; 41(3):447-58. PubMed ID: 1656629.
    Abstract:
    In patients with parkinsonism to whom in accordance with medical-diagnostic indices electrodes were implanted into the nuclei of thalamus and striopallidal system, impulse activity of neurones was recorded in tests with presentation of visual and acoustic stimuli. It has been shown that neurones of these structures, reacting by a change of discharges frequency in carrying out the assessing actions by man constitute a special class of neurones, spatially separated from those, connected with the organization of motor acts. The typical feature of neuronal reactions is a high degree of their value dependence on the level of attention. Neurones of the above structures reacts also during preparation of the assessing actions and fixation of their results in the short-term memory.
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