Anatomical evidence for an intergeniculate leaflet in Rana pipiens.
The projections of the nucleus of Bellonci and the anterior thalamic nucleus in Rana pipiens appear to be remarkably similar to those that have been described for the mammalian intergeniculate leaflet. The connections of these nuclei were examined using both the anterograde and retrograde transport of horseradish peroxidase. Afferents to the neuropil of Bellonci and its nucleus include bilateral projections from the retina, the contralateral nucleus of Bellonci, and anterior thalamic nucleus as well as bilateral projections from the pretectum and the ipsilateral suprachiasmatic nucleus. Efferent projections observed following HRP injections in the anterior thalamus consist of three components: (1) a ventral hypothalamic-suprachiasmatic and commissural projection, (2) a dorsal descending tract to the pretectum and tectum, and (3) a ventral descending tract to the somatomotor brainstem.
Montgomery
N M
NM
Neuroscience and Behavior Program, University of Massachusetts, Amherst 01003.
Fite
K V
KV
Li
Z
Z
D000818:Animals; D001933:Brain Stem / Q000033:anatomy & histology / Q000166:cytology; D005829:Geniculate Bodies / Q000033:anatomy & histology* / Q000166:cytology; D006735:Horseradish Peroxidase; D009434:Neural Pathways; D009475:Neurons, Afferent / Q000502:physiology; D009476:Neurons, Efferent / Q000502:physiology; D011894:Rana pipiens; D013493:Suprachiasmatic Nucleus / Q000033:anatomy & histology / Q000166:cytology; D013787:Thalamic Nuclei / Q000033:anatomy & histology / Q000166:cytology
D006735:Horseradish Peroxidase