Head Position of Patients with Right Hemisphere Damage during a Visual Search Task in a Large Field
| Autor: | Takashi Fujita, Shinya Fukunaga, Shinya Fuwa, Nobuyuki Sunahara, Shusuke Takahashi, Kiyoe Sakai, Daisuke Kimura, Minoru Toyama, Naoe Mori, Masako Notoya, Ken Nakatani |
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| Rok vydání: | 2018 |
| Předmět: |
Unilateral spatial neglect
Visual search medicine.medical_specialty Visual perception media_common.quotation_subject Neck rotation Audiology Neglect Task (project management) 03 medical and health sciences 0302 clinical medicine 030220 oncology & carcinogenesis medicine Head position Right hemisphere 030217 neurology & neurosurgery media_common Mathematics |
| Zdroj: | World Journal of Neuroscience. :190-202 |
| ISSN: | 2162-2019 2162-2000 |
| DOI: | 10.4236/wjns.2018.82018 |
| Popis: | Spatial neglect syndrome with cerebral lesions is characterized by the ina-bility to orient, report, or respond to relevant visual stimuli contralateral to the lesions. In this study, we investigated the pattern of horizontal visual search in a large space; this search was performed by patients with right hemisphere damage caused by cerebrovascular disease. The neck rotation angle and search time in each increment were continuously recorded during the task, and quantitative data of the measurements were collected. Head position during the visual search task in a large space (%) was then calculated. We set angular bands in increments of 5 degrees from the midline on the left and right sides, and calculated the total search time in each angular band. In patients with unilateral spatial neglect (USN), the search time in the angular band of 5 - 9 on the right side was significantly longer (with USN 16.7%, without USN 4.5%, t = 2.52, df = 16, p < 0.05). Furthermore, in patients with neglect in the leftmost end area in a large space, the search time was significantly shorter in the angular band of 1 - 4 degrees to the left (with neglect 13.1%, without neglect 23.7%, t = 2.13, df = 16, p < 0.05), and tended to be long in the angular band of 5 - 9 to the right. The neck rotation angle and pattern during the search task in a large field deviated slightly to the right, and the search time slightly to the left was short. We believe that these results support the rightward deviation of the search pattern and frame of USN patients. |
| Databáze: | OpenAIRE |
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