Title :
Biomagnetic measurement of the neural activity in the mental image processing
Author :
Iwaki, Sunao ; Ueno, Shoogo ; Imada, Toshiaki ; Tonoike, Mitsuo
Author_Institution :
Life Electron. Res. Center, Electrotech. Lab., Hyogo, Japan
Abstract :
We investigated the dynamic properties of the distributed cortical activity related to mental rotation processes at high temporal resolution by means of brain-magnetic-field measurements and a linear inversion algorithm. Distributed neural activities during the mental rotation and control tasks were estimated for six subjects, and the differences in the activity distribution were analyzed. Statistically significant differences in the parietal and lateral posterior temporal region were detected 200-300 ms after the visual stimulus, indicating that the dorsal and ventral pathway were included in the mental image processing
Keywords :
image processing; inverse problems; magnetoencephalography; neurophysiology; activity distribution; biomagnetic measurement; brain-magnetic-field measurements; control tasks; distributed cortical activity; distributed neural activities; dorsal pathway; dynamic properties; high temporal resolution; lateral posterior temporal region; linear inversion algorithm; mental image processing; mental rotation processes; parietal posterior temporal region; subjects; ventral pathway; visual stimulus; Biomagnetics; Biomedical imaging; Delay; Humans; Image processing; Image resolution; Magnetic resonance imaging; Magnetic separation; Positron emission tomography; Telephony;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802539
