PMID: 6168338Sep 21, 1981Paper

Cortical visual input to the orbito-insular cortex in the cat

Brain Research
S SquatritoP P Battaglini

Abstract

The anatomical pathways supplying the visual signal to the cat orbito-insular cortex (OIC) from primary visual areas were studied by an anterograde axonal transport technique. L-[5-3H]proline was injected, in different animals, in each of areas 17, 18, 19 and the lateral suprasylvian visual area (LS). Serial histological sections were processed by autoradiographic technique after long (8-16 days) or short (30 h) survival times. The axonal flow labelled direct pathways from LS to the ipsilateral orbital gyrus and the ventral bank of the anterior ectosylvian sulcus; this region seems to correspond to that from which many authors recorded photically evoked potentials. Long survival animals injected in LS showed labels also in the contralateral OIC. No axonal flow could be demonstrated from areas 17, 18 and 19 to OIC, either at short of long survival times. The results suggest that, apart from possible sub cortical afferences, a critical visual input may reach OIC from the extrageniculostriate visual system through LS. The functional relevance of extrastriate input to OIC is discussed.

References

Jan 15, 1978·The Journal of Comparative Neurology·R J TusaA C Rosenquist
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May 1, 1979·Physiology & Behavior·F B Colavita, D H Weisberg
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Apr 1, 1969·Electroencephalography and Clinical Neurophysiology·P R Loe, L A Benevento
Feb 28, 1969·Science·G E Schneider

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Citations

Jun 23, 1987·Brain Research·M NakaiE Miyashita
Dec 23, 1983·Neuroscience Letters·E MaireM Imbert
Dec 15, 1985·The Journal of Comparative Neurology·C Cavada, F Reinoso-Suárez
Apr 3, 1995·The Journal of Comparative Neurology·W VanduffelG A Orban
Jul 8, 1987·The Journal of Comparative Neurology·C R Olson, A M Graybiel

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