Thalamic projections to the cortical gustatory area in the cat studied by retrograde axonal transport of horseradish peroxidase.
The thalamic projections to the cortical gustatory area in the cat were studied using the horseradish peroxidase (HRP) method. The gustatory area extends from the lateral lip of the presylvian sulcus (posterior two-thirds) to the posterior part of the orbital gyrus. It is bounded anteriorly by area 6a beta, laterally by the first somatosensory area, medially by the fundus and medial bank of the presylvian sulcus (prefrontal area), and posteriorly by the insular area. The cortical gustatory area receives fibers mainly from the medial smaller-celled part of the posteromedial ventral nucleus (VPMM). Cortical projections of the VPMM are organized topically; the anterior part of the gustatory cortex receives fibers from the anterodorsal and posteroventral portions of the anterior two-thirds of the VPMM, whereas the posterior gustatory cortex receives fibers from the anteroventral, posterodorsal and posterior portions of the posterior two-thirds of the VPMM. In addition, there appears to be a mediolateral organization of the cortical projections of the VPMM to the gustatory area. The cortical gustatory area receives a few projections from the ventral lateral, ventral medial, submedial, paracentral, lateral central, parafascicular and medial central nuclei.
Niimi
K
K
Third Department of Anatomy, Okayama University Medical School, Japan.
Miyata
Y
Y
Matsuoka
H
H
D000818:Animals; D002415:Cats / Q000033:anatomy & histology*; D002540:Cerebral Cortex / Q000166:cytology*; D006735:Horseradish Peroxidase; D009434:Neural Pathways / Q000033:anatomy & histology; D013649:Taste / Q000502:physiology*; D013787:Thalamic Nuclei / Q000166:cytology*
D006735:Horseradish Peroxidase