Title :
Magnetic field responses to visual-spatial (horizontal line) stimulation in parietal association cortex
Author :
Murakami, Shinji ; Kuriki, Shinya ; Fujii, Mitsuru ; Fukatsu, Ryo ; Takahata, Naohiko
Author_Institution :
Dept. of Neuropsychiatry, Sapporo Med. Univ., Japan
Abstract :
For the purpose of revealing higher brain functions of visual and spatial cognition, the authors investigated the neuronal responses to visual stimulation and eye position as the spatial information, through the use of a 37-channel SQUID magnetometer. The main magnetic field responses were observed at 90-120 (M120), 120-170 (M170) and 180-220 (M220) msec after LED onset. The magnetic field responses of M170 was stable and observed in all subjects, and almost the same in 1 and 2 experiments. The estimated current dipole source of these magnetic field responses of M170 was located at deep PAC, near the intraparietal sulcus
Keywords :
magnetoencephalography; vision; 37-channel SQUID magnetometer; 90 to 220 ms; LED onset; eye position; higher brain functions; horizontal line stimulation; intraparietal sulcus; magnetic field responses; neuronal responses; parietal association cortex; spatial cognition; spatial information; visual-spatial stimulation; Cognition; Delay; Humans; Light emitting diodes; Magnetic fields; Magnetic resonance imaging; Magnetic separation; Magnetic shielding; Retina; SQUID magnetometers;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995 and 14th Conference of the Biomedical Engineering Society of India. An International Meeting, Proceedings of the First Regional Conference., IEEE
Conference_Location :
New Delhi
Print_ISBN :
0-7803-2711-X
DOI :
10.1109/RCEMBS.1995.511704
