ネコの前および中シルビウス上回への視床投射機構に関する研究

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概要

• 論文の詳細を見る

• The organization of thalamic projections to the anterior and middle suprasylvian gyri in the cat has been studied by retrograde axonal transport of horseradish peroxidase. Area 5 receives a large number of fibers from the posterior lateral nucleus, and a few fibers from the dorsal lateral nucleus. It receives many fibers from the ventrolateral part of the medial pulvinar nucleus and from the suprageniculate and lateral pulvinar nuclei. Area 5 receives a considerable number of fibers from the lateral central, anterior ventral and lateral ventral nuclei, and only a few fibers from the paracentral nucleus. Area 7 receives projections from the medial pulvinar nucleus (dorsolateral and ventrolateral parts) and the lateral pulvinar, dorsal lateral, posterior lateral and lateral central nuclei, and a lesser number from the anterior and lateral ventral nuclei. The suprageniculate and paracentral nuclei project only a few fibers to area 7. Area 21 has its main input from the medial pulvinar nucleus, mainly the dorsolateral part. It receives many fibers from the lateral pulvinar nucleus, and a few fibers from the dorsal lateral nucleus, the dorsolateral part of the posterior lateral nucleus and the lateral central and paracentral nuclei. Area 21 receives very few fibers from the dorsal lateral geniculate nucleus (NIM and lamina B) and the inferior pulvinar nucleus, and receives no fibers from the anterior and lateral ventral nuclei. The thalamic afferents from the lateral bank of the lateral sulcus are similar to those from area 7. However, this cortical area receives more fibers from the posterior lateral nucleus, and fewer fibers from the paracentral, anterior ventral and lateral ventral nuclei. It receives scarcely any fibers from the suprageniculate nucleus. The lateral bank of the middle suprasylvian sulcus (Clare-Bishop area) receives cortical afferents mainly from the inferior pulvinar nucleus. It also receives fibers from the medial pulvinar nucleus, and in lesser numbers from the lateral pulvinar and posterior lateral nuclei. It receives a few fibers from the dorsal lateral geniculate nucleus, particularly NIM and lamina B, and very few fibers from the suprageniculate, lateral central and paracentral nuclei.

• 岡山医学会の論文

著者

• 松岡 宏明

  日本防疫殺虫剤協会

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