The directional effects of passive eye movement on the directional visual responses of single units in the pigeon optic tectum

摘要: We have investigated the visual responses of 184 single units located in superficial layers optic tectum (OT) decerebrate, paralysed pigeon. Visual were similar to those reported non-decerebrate preparations; most responded best moving stimuli, 18% directionally selective (they had a clear preference for particular direction stimulus movement), 76% plane-selective movement either plane). However, we also found that high proportion showed some sensitivity orientation stimuli. examined effects extraocular muscle (EOM) afferent signals, induced by passive eye (PEM), on directional units. modified directions movement, although there was no unique relationship between which an individual unit and caused greatest modification response. The results show EOM carrying information concerning reach OT pigeon modify manner suggests role these signals processing information.