Thalamic and basal forebrain cholinergic connections of the rat posterior parietal cortex

The thalamic connectivity and basal forebrain cholinergic input to the posterior parietal cortex (PPC) of Long-Evans rats was examined using combined retrograde tracing and immunocytochemical methods. As in previous studies, the PPC could be distinguished by its input from the lateral posterior, lat...

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Bibliographic Details
Published inNeuroreport Vol. 10; no. 5; p. 941
Main Authors Bucci, D J, Conley, M, Gallagher, M
Format Journal Article
LanguageEnglish
Published England 06.04.1999
Subjects
Animals
Choline O-Acetyltransferase - metabolism
Frontal Lobe - cytology
Frontal Lobe - physiology
Male
Molecular Probes
Neural Pathways - enzymology
Neural Pathways - physiology
Neurons - enzymology
Neurons - physiology
Parietal Lobe - cytology
Parietal Lobe - physiology
Prosencephalon - cytology
Prosencephalon - enzymology
Prosencephalon - physiology
Rats
Rats, Long-Evans
Thalamic Nuclei - cytology
Thalamic Nuclei - enzymology
Thalamic Nuclei - physiology
Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate
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Summary:The thalamic connectivity and basal forebrain cholinergic input to the posterior parietal cortex (PPC) of Long-Evans rats was examined using combined retrograde tracing and immunocytochemical methods. As in previous studies, the PPC could be distinguished by its input from the lateral posterior, lateral dorsal, and posterior nuclei of the thalamus, but not the lateral geniculate nucleus or ventrobasal complex. These nuclei were also observed to receive reciprocal projections from the ipsilateral PPC. Cholinergic neurons innervating the PPC were primarily localized to the substantia innominata/nucleus basalis region. The implications of these data for possible functions of the cholinergic input to PPC are discussed.
ISSN:0959-4965
DOI:10.1097/00001756-199904060-00009