Spontaneous in-flight accommodation of hand orientation to unseen grasp targets: A case of action blindsight
| Autor: | Zoë R. Williams, Emily K. Prentiss, Bogachan Sahin, Colleen L. Schneider, Bradford Z. Mahon |
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| Rok vydání: | 2018 |
| Předmět: |
Male
0301 basic medicine genetic structures Cognitive Neuroscience media_common.quotation_subject Experimental and Cognitive Psychology Blindsight Visual system Article 03 medical and health sciences 0302 clinical medicine Arts and Humanities (miscellaneous) Orientation (mental) Parietal Lobe Perception Developmental and Educational Psychology medicine Humans Visual Pathways Computer vision Quadrantanopia Orientation Spatial Aged media_common Hand Strength business.industry Cognitive neuroscience of visual object recognition medicine.disease Visual field Stroke body regions 030104 developmental biology Neuropsychology and Physiological Psychology Visual Perception Artificial intelligence Visual Fields Psychology business Accommodation Psychomotor Performance 030217 neurology & neurosurgery |
| Zdroj: | Cognitive Neuropsychology. 35:343-351 |
| ISSN: | 1464-0627 0264-3294 |
| DOI: | 10.1080/02643294.2018.1432584 |
| Popis: | The division of labour between the dorsal and ventral visual pathways is well established. The ventral stream supports object identification, while the dorsal stream supports online processing of visual information in the service of visually guided actions. Here, we report a case of an individual with a right inferior quadrantanopia who exhibited accurate spontaneous rotation of his wrist when grasping a target object in his blind visual field. His accurate wrist orientation was observed despite the fact that he exhibited no sensitivity to the orientation of the handle in a perceptual matching task. These findings indicate that non-geniculostriate visual pathways process basic volumetric information relevant to grasping, and reinforce the observation that phenomenal awareness is not necessary for an object's volumetric properties to influence visuomotor performance. |
| Databáze: | OpenAIRE |
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