Elsevier

Vision Research

Volume 10, Issue 1, January 1970, Pages 49-54
Vision Research

Binocular depth perception and the corpus callosum

https://doi.org/10.1016/0042-6989(70)90061-1Get rights and content

Abstract

An object lying directly behind or in front of the fixation point has images that project to separate hemispheres through the two eyes. A split-brain human cannot interpret the depth of such an object although his peripheral stereopsis is normal. There must be an interhemispheric link for binocular integration in central vision.

Un objet situédirectement en arrière ou en avant du point de fixation a des images qui se projettantàtravers les yeux dans des hémisphères séparés. Un sujét humainàcerveau sectionnéen deux ne peut interpréter la profondeur d'un tel objet bien que sa stéréopsie périphérique soit normale. Il doit donc exister une liaison entre les hémisphères pour l'intégration binoculaire en vision centrale.

Ein Gegenstand, welcher sich direkt vor oder hinter dem Fixationspunkt befindet, wird so abgebildet, dass er mittels beider Augen auf separate Halbkugeln projizien wird. Ein Subjekt mit entzweitem Gehirn kann die Tiefe eines solchen Gegenstandes nicht einschätzen, obwohl sein periphäres Tiefensehen normal ist. Es wird daraus gefolgert, dass es zwischen den beiden Halbkugeln eine Verbindung für die Binokularsummierung im Zentralsehen geben muss.

Изoбpaжeния oбъeктa, pacпoлoжeннoгo пpямo пoзaди или жe в плocкocти пyнктa фикcaции, пpoициpyютcя oт двyх глaз в paзныe пoлyщapия. Хeлoвeк c pacceхeнным пo caгиттaльнoй линии мoзгoм нe мoжeт cyдить o глyбинe нaхoждeния этoгo oбъeктa, хoтя пepифepихecкий aппapaт cтepeocкoпихecкoгo вocпpиятия y нeгo coхpaнeн. Дoлжнa имeтьcя cвязь мeждy пoлyщapиями для бинoкyляpнoй интeгpaции в цeнтpaльнoм зpeнии.

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    1

    Present address: Department of Psychology, Florida State University, Tallahassee, Florida 32306, U.S.A.

    2

    Present address: The Physiological Laboratory, University of Cambridge, Cambridge, England.

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