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Pflügers Archiv

, Volume 332, Issue 1, pp 10–20 | Cite as

Effects of lenticular stimulation on unitary and mass responses of the visual cortex to light

  • Iwao Kadobayashi
Article

Summary

Effects of lenticular stimulation on unitary and mass responses of the visual cortex were studied in acutely prepared cats. A conditioning shock applied to the lenticular nucleus (globus pallidus and putamen) resulted in an increase in amplitude of primary components of the photically evoked potential in the lateral gyrus. The increase in amplitude of the evoked potential was observed not only in the ipsilateral visual cortex but also in the contralateral one. Marked increase was noted at several conditioning-test intervals. Unitary responses of visual cortical cells to light were enhanced or inhibited by the conditioning shock to the lenticular nucleus. In units which fired primarily after flash, enhancement of firing was observed more commonly than inhibition, but in units which showed a primary neuronal silence after light, it was vice versa. It is concluded that the lenticular nucleus participates in the visual cortical activity.

Key words

Globus Pallidus Putamen Photic Response Visual Cortex 

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Copyright information

© Springer-Verlag 1972

Authors and Affiliations

  • Iwao Kadobayashi
    • 1
  1. 1.Department of PsychiatryKyoto Prefectural University of MedicineKyotoJapan

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