Reaching Out to See: Arm Position Can Attenuate Human Visual Loss
Journal of Cognitive Neuroscience
Auditory Peripersonal Space in Humans
Journal of Cognitive Neuroscience
Supramodal Effects of Covert Spatial Orienting Triggered by Visual or Tactile Events
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Binding Personal and Peripersonal Space: Evidence from Tactile Extinction
Journal of Cognitive Neuroscience
When Far Becomes Near: Remapping of Space by Tool Use
Journal of Cognitive Neuroscience
The Influence of the Body and Action on Spatial Attention
Attention in Cognitive Systems. Theories and Systems from an Interdisciplinary Viewpoint
Journal of Cognitive Neuroscience
Visuotactile representation of peripersonal space: A neural network study
Neural Computation
Embodied cognition and the magical future of interaction design
ACM Transactions on Computer-Human Interaction (TOCHI) - Special issue on the theory and practice of embodied interaction in HCI and interaction design
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Current interpretations of extinction suggest that the disorder is due to an unbalanced competition between ipsilesional and contralesional representations of space. The question addressed in this study is whether the competition between left and right representations of space in one sensory modality (i.e., touch) can be reduced or exacerbated by the activation of an intact spatial representation in a different modality that is functionally linked to the damaged representation (i.e., vision). This hypothesis was tested in 10 right-hemisphere lesioned patients who suffered from reliable tactile extinction. We found that a visual stimulus presented near the patient's ipsilesional hand (i.e., visual peripersonal space) inhibited the processing of a tactile stimulus delivered on the contralesional hand (cross-modal visuotactile extinction) to the same extent as did an ipsilesional tactile stimulation (unimodal tactile extinction). It was also found that a visual stimulus presented near the contralesional hand improved the detection of a tactile stimulus applied to the same hand. In striking contrast, less modulatory effects of vision on touch perception were observed when a visual stimulus was presented far from the space immediately around the patient's hand (i.e., extrapersonal space). This study clearly demonstrates the existence of a visual peripersonal space centered on the hand in humans and its modulatory effects on tactile perception. These findings are explained by referring to the activity of bimodal neurons in premotor and parietal cortex of macaque, which have tactile receptive fields on the hand and corresponding visual receptive fields in the space immediately adjacent to the tactile fields.