Telencephalic and pretectal modulation of the directional selectivity of accessory optic neurons in the pigeon
Hamassaki, D.E.; Gasparotto, O.C.; Nogueira, M.I.; Britto, L.R.
Brazilian Journal of Medical and Biological Research 21(3): 649-652
1988
ISSN/ISBN: 0100-879X PMID: 3067813 Document Number: 309621
Direction-selective units within the accessory optic system of the pigeon were shown to respond more strongly to motion along two main directions, downward-nasal and upward-temporal. Following ipsilateral telencephalic or pretectal lesions, these directions were modified in a systematic way. In the former, the principal response directions were downward-nasal and temporal and in the latter, downward-temporal and upward-temporal. These data indicate that the non-retinal afferents play an important role in the functional organization of the accessory optic system.