Hemispheric integration and differences in perception of a line-motion illusion in the divided brain
Five people lacking the corpus callosum (two callosotomized, three with agenesis of the corpus callosum) and neurologically normal subjects were shown vertical lines that appeared instantaneously between pairs of rectangles in one or other visual field. When one of the rectangles flashed prior to th...
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| Veröffentlicht in: | Neuropsychologia 2004, Vol.42 (13), p.1852-1857 |
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| creator | Corballis, Michael C. Barnett, Kylie J. Fabri, Mara Paggi, Aldo Corballis, Paul M. |
| description | Five people lacking the corpus callosum (two callosotomized, three with agenesis of the corpus callosum) and neurologically normal subjects were shown vertical lines that appeared instantaneously between pairs of rectangles in one or other visual field. When one of the rectangles flashed prior to the presentation of the line, and the line was in the same visual field, all subjects perceived the line as spreading from the flashed rectangle to the other. Normal subjects and one of the callosotomized subjects showed a slight but significant right visual-field advantage, perhaps reflecting a left-hemispheric superiority in processing rapid temporal events. The illusion was also induced when the line and the flash were in opposite visual fields in one of the callosotomized, one of the acallosal subjects, and about half of the normal subjects, implying interhemispheric integration even in the absence of the corpus callosum. |
| doi_str_mv | 10.1016/j.neuropsychologia.2004.04.014 |
| format | Article |
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Psychology</subject><subject>Hemispheric differences</subject><subject>Hemispheric integration</subject><subject>Humans</subject><subject>Illusions - physiology</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Motion Perception</subject><subject>Perception - physiology</subject><subject>Photic Stimulation - methods</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. 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Psychology</topic><topic>Hemispheric differences</topic><topic>Hemispheric integration</topic><topic>Humans</topic><topic>Illusions - physiology</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Motion Perception</topic><topic>Perception - physiology</topic><topic>Photic Stimulation - methods</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Psychomotor Performance</topic><topic>Reaction Time - physiology</topic><topic>Split brain</topic><topic>Visual Fields - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Corballis, Michael C.</creatorcontrib><creatorcontrib>Barnett, Kylie J.</creatorcontrib><creatorcontrib>Fabri, Mara</creatorcontrib><creatorcontrib>Paggi, Aldo</creatorcontrib><creatorcontrib>Corballis, Paul M.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Neuropsychologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Corballis, Michael C.</au><au>Barnett, Kylie J.</au><au>Fabri, Mara</au><au>Paggi, Aldo</au><au>Corballis, Paul M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hemispheric integration and differences in perception of a line-motion illusion in the divided brain</atitle><jtitle>Neuropsychologia</jtitle><addtitle>Neuropsychologia</addtitle><date>2004</date><risdate>2004</risdate><volume>42</volume><issue>13</issue><spage>1852</spage><epage>1857</epage><pages>1852-1857</pages><issn>0028-3932</issn><eissn>1873-3514</eissn><coden>NUPSA6</coden><abstract>Five people lacking the corpus callosum (two callosotomized, three with agenesis of the corpus callosum) and neurologically normal subjects were shown vertical lines that appeared instantaneously between pairs of rectangles in one or other visual field. When one of the rectangles flashed prior to the presentation of the line, and the line was in the same visual field, all subjects perceived the line as spreading from the flashed rectangle to the other. Normal subjects and one of the callosotomized subjects showed a slight but significant right visual-field advantage, perhaps reflecting a left-hemispheric superiority in processing rapid temporal events. The illusion was also induced when the line and the flash were in opposite visual fields in one of the callosotomized, one of the acallosal subjects, and about half of the normal subjects, implying interhemispheric integration even in the absence of the corpus callosum.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>15351633</pmid><doi>10.1016/j.neuropsychologia.2004.04.014</doi><tpages>6</tpages></addata></record> |
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| subjects | Adult Agenesis of Corpus Callosum Analysis of Variance Anatomical correlates of behavior Behavioral psychophysiology Biological and medical sciences Callosal agenesis Corpus Callosum - physiopathology Female Functional Laterality - physiology Fundamental and applied biological sciences. Psychology Hemispheric differences Hemispheric integration Humans Illusions - physiology Male Middle Aged Motion Perception Perception - physiology Photic Stimulation - methods Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychomotor Performance Reaction Time - physiology Split brain Visual Fields - physiology |
| title | Hemispheric integration and differences in perception of a line-motion illusion in the divided brain |
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