Human brain activity with near-infrared spectroscopy

Qingming Luo; Britton Chance

doi:10.1117/12.364372

17 September 1999 Human brain activity with near-infrared spectroscopy

Qingming Luo, Britton Chance

Proceedings Volume 3863, 1999 International Conference on Biomedical Optics; (1999) https://doi.org/10.1117/12.364372
Event: International Symposium on Biomedical Optics, 1999, Wuhan, China

Abstract

Human brain activity was studied with a real time functional Near-InfraRed Imager (fNIRI). The imager has 16 measurement channels and covers 4 cm by 9 cm detection area. Brain activities in occipital, motor and prefrontal area were studied with the fNIRI. In prefrontal stimulation, language cognition, analogies, forming memory for new associations, emotional thinking, and mental arithmetic were carried out. Experimental results measured with fNIRI are demonstrated in this paper. It was shown that fNIRI technique is able to reveal the occipital activity during visual stimulation, and co-register well with results of fMRI in the motor cortex activity during finger tapping. In the studies of the effects of left prefrontal lobe on forming memory for new associations, it is shown that left prefrontal lobe activated more under deep conditions than that under shallow encoding, especially the dorsal part. In the studies of emotional thinking, it was shown that the responses were different between positive- negative emotional thinking and negative-positive emotional thinking. In mental arithmetic studies, higher activation was found in the first task than in the second, regardless of the difficulty, and higher activation was measured in subtraction of 17 than in subtraction of 3.

Citation Download Citation

Qingming Luo and Britton Chance "Human brain activity with near-infrared spectroscopy", Proc. SPIE 3863, 1999 International Conference on Biomedical Optics, (17 September 1999); https://doi.org/10.1117/12.364372

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