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The role of visual perception in spoken responses

Amassian V. E., Cracco R. Q., Maccabee P. J., Cracco J. B., Rudell A. P., Eberle L., Bodis-Wollner I.

Biocybernetics and Biomedical Engineering

2011

Vol. 31, no. 3

65-80

How subjects voice responses to flashed visual symbols was investigated at successive stages of the information processing. The representation exits from V1 mainly by 120-140, mean 130 ms; cortical motor output to voice onset has a mean delay of 85 ms. The latencies of voicing only a noise, blurting versus perceiving before responding correctly yield mean delays for perception (85 ms) and for spatio-temporal motor coding of digits (45 ms), with a mean total delay of 345 ms. Prefrontal cortex and Intralaminar N. also contribute to perception.