title: Telencephalic and pretectal modulation of the directional selectivity of accessory optic neurons in the pigeon.
abstract: 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.
authors.affiliation: Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Brasil.
authors.forename: D E
authors.initials: DE
authors.lastname: Hamassaki
authors.forename: O C
authors.initials: OC
authors.lastname: Gasparotto
authors.forename: M I
authors.initials: MI
authors.lastname: Nogueira
authors.forename: L R
authors.initials: LR
authors.lastname: Britto
mesh_terms: D000818:Animals; D010856:Columbidae / Q000502:physiology*; D005260:Female; D008297:Male; D009474:Neurons / Q000502:physiology*; D010775:Photic Stimulation; D013238:Stereotaxic Techniques; D003336:Tectum Mesencephali / Q000502:physiology*; D013687:Telencephalon / Q000502:physiology*; D014795:Visual Pathways / Q000502:physiology*