TY - GEN
T1 - Does visual search by neck motion improve hemispatial neglect?
T2 - 2020 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2020
AU - Sabu, Rikushi
AU - Yasuda, Kazuhiro
AU - Kato, Ryoichi
AU - Kawaguchi, Shuntaro
AU - Iwata, Hiroyasu
N1 - Funding Information:
VI. ACKNOWLEDGEMENT This study was supported by the Tateisi Science and Technology Foundation, Grant-in-Aid for Junior Researchers (Technological Research Section: 18C13), Research Institute for Science and Engineering, Waseda University. We would like to thank two patients who kindly agreed to participate in our study.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/11
Y1 - 2020/10/11
N2 - Unilateral spatial neglect (USN) is a higher cognitive dysfunction that can occur after a stroke. It is defined as an impairment in finding, reporting, reacting to, and directing stimuli opposite the damaged side of the brain. We have proposed a system to identify neglected regions in USN patients in three dimensions using three-dimensional virtual reality. The objectives of this study are twofold: first, to propose a system for numerically identifying the neglected regions using an object detection task in a virtual space, and second, to compare the neglected regions during object detection when the patient's neck is immobilized ('fixed-neck' condition) versus when the neck can be freely moved to search ('free-neck' condition). We performed the test using an immersive virtual reality system, once with the patient's neck fixed and once with the patient's neck free to move. Comparing the results of the study in two patients, we found that the neglected areas were similar in the fixed-neck condition. However, in the free-neck condition, one patient's neglect improved while the other patient's neglect worsened. These results suggest that exploratory ability affects the symptoms of USN and is crucial for clinical evaluation of USN patients.
AB - Unilateral spatial neglect (USN) is a higher cognitive dysfunction that can occur after a stroke. It is defined as an impairment in finding, reporting, reacting to, and directing stimuli opposite the damaged side of the brain. We have proposed a system to identify neglected regions in USN patients in three dimensions using three-dimensional virtual reality. The objectives of this study are twofold: first, to propose a system for numerically identifying the neglected regions using an object detection task in a virtual space, and second, to compare the neglected regions during object detection when the patient's neck is immobilized ('fixed-neck' condition) versus when the neck can be freely moved to search ('free-neck' condition). We performed the test using an immersive virtual reality system, once with the patient's neck fixed and once with the patient's neck free to move. Comparing the results of the study in two patients, we found that the neglected areas were similar in the fixed-neck condition. However, in the free-neck condition, one patient's neglect improved while the other patient's neglect worsened. These results suggest that exploratory ability affects the symptoms of USN and is crucial for clinical evaluation of USN patients.
KW - Exploratory Ability
KW - Unilateral Spatial Neglect
KW - VR Evaluation System
UR - http://www.scopus.com/inward/record.url?scp=85098874819&partnerID=8YFLogxK
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U2 - 10.1109/SMC42975.2020.9283111
DO - 10.1109/SMC42975.2020.9283111
M3 - Conference contribution
AN - SCOPUS:85098874819
T3 - Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
SP - 262
EP - 267
BT - 2020 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2020
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 11 October 2020 through 14 October 2020
ER -