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Connections of efferent fibers from hyperstriatal areas in chicken, raven, and African lovebird

1967; Wiley; Volume: 131; Issue: 3 Linguagem: Inglês

10.1002/cne.901310304

1096-9861

Norma Jean Adamo,

Hemispheric Asymmetry in Neuroscience

Abstract Hyperstriatal lesions were produced by suction in chickens, ravens and African lovebirds. Efferent connections from the ablated regions were determined by examining serial sections stained by the Nauta‐Gygax method. All three species utilize the septo‐mesencephalic tract to reach other brain regions, but in two ravens degeneration is also observed in the lateral forebrain bundle. The nucleus superficialis parvocellularis, nucleus lateralis anterior, nucleus intercalatus, pretectal nucleus and optic tectum are sites of termination common to all three species. Terminations in other structures are found depending on the species examined and/or the rostro‐caudal position of the lesion. The nucleus dorsolateralis anterior, lateral geniculate nucleus, nucleus tractus tecto‐thalamici cruciati, nucleus hypothalamicus posterior, and medial and lateral pontine nuclei are areas which show degeneration in specific birds.