TY - JOUR
T1 - Perception of upright
T2 - Multisensory convergence and the role of temporo-parietal cortex
AU - Kheradmand, Amir
AU - Winnick, Ariel
N1 - Publisher Copyright:
© 2017 Kheradmand and Winnick.
PY - 2017/10/25
Y1 - 2017/10/25
N2 - We inherently maintain a stable perception of the world despite frequent changes in the head, eye, and body positions. Such "orientation constancy" is a prerequisite for coherent spatial perception and sensorimotor planning. As a multimodal sensory reference, perception of upright represents neural processes that subserve orientation constancy through integration of sensory information encoding the eye, head, and body positions. Although perception of upright is distinct from perception of body orientation, they share similar neural substrates within the cerebral cortical networks involved in perception of spatial orientation. These cortical networks, mainly within the temporo-parietal junction, are crucial for multisensory processing and integration that generate sensory reference frames for coherent perception of self-position and extrapersonal space transformations. In this review, we focus on these neural mechanisms and discuss (i) neurobehavioral aspects of orientation constancy, (ii) sensory models that address the neurophysiology underlying perception of upright, and (iii) the current evidence for the role of cerebral cortex in perception of upright and orientation constancy, including findings from the neurological disorders that affect cortical function.
AB - We inherently maintain a stable perception of the world despite frequent changes in the head, eye, and body positions. Such "orientation constancy" is a prerequisite for coherent spatial perception and sensorimotor planning. As a multimodal sensory reference, perception of upright represents neural processes that subserve orientation constancy through integration of sensory information encoding the eye, head, and body positions. Although perception of upright is distinct from perception of body orientation, they share similar neural substrates within the cerebral cortical networks involved in perception of spatial orientation. These cortical networks, mainly within the temporo-parietal junction, are crucial for multisensory processing and integration that generate sensory reference frames for coherent perception of self-position and extrapersonal space transformations. In this review, we focus on these neural mechanisms and discuss (i) neurobehavioral aspects of orientation constancy, (ii) sensory models that address the neurophysiology underlying perception of upright, and (iii) the current evidence for the role of cerebral cortex in perception of upright and orientation constancy, including findings from the neurological disorders that affect cortical function.
KW - Bayesian
KW - Cerebral cortex
KW - Ocular torsion
KW - Orientation constancy
KW - Spatial orientation
KW - Subjective visual vertical
KW - Temporo-parietal cortex
KW - Upright perception
UR - http://www.scopus.com/inward/record.url?scp=85032186745&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85032186745&partnerID=8YFLogxK
U2 - 10.3389/fneur.2017.00552
DO - 10.3389/fneur.2017.00552
M3 - Article
C2 - 29118736
AN - SCOPUS:85032186745
SN - 1664-2295
VL - 8
JO - Frontiers in Neurology
JF - Frontiers in Neurology
IS - OCT
M1 - 552
ER -