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THE JOURNAL OF COMPARATIVE NEUROLOGY 361:1-24 (1995) Morphology of Thalamocortical Neurons
 

Summary: THE JOURNAL OF COMPARATIVE NEUROLOGY 361:1-24 (1995)
Morphology of Thalamocortical Neurons
Projecting to the Primary Somatosensory
Cortex and Their Relationship
to SpinothalamicTerminals
in the Squirrel Monkey
TING SHI AND A. VANIA APKARIAN
Department of Neurosurgery, Computational Neuroscience Program, State University
of New York Health Science Center, Syracuse, New York 13210
ABSTRACT
This study examined the morphology of thalamocortical neurons projecting to the primary
somatosensory cortex (SI; hand region of areas 3a, 3b, 1,and 2) and their relationship to the
spinothalamic (STT) terminals in the squirrel monkey. Retrogradely labeled thalamocortical
neurons were intracellularly filled with Lucifer yellow (LY), and the STT terminals were
anterogradely labeled with biotinylated dextran. Both filledneurons and labeled terminals were
differentially visualized in the same field by a dual immunocytochemical staining method.
SI-projectingneurons appeared at the light level to be in contact with STT terminal boutons in
the ventroposterior lateral (VPL),ventroposterior inferior (VPI),and centrolateral (CL)nuclei
and the posterior complex(PO).The analyses of the neuronal morphology revealed that somatic
and dendritic morphologies of SI-projecting neurons in these thalamic nuclei, as well as in the

  

Source: Apkarian, A. Vania - Department of Physiology, Northwestern University

 

Collections: Biology and Medicine