Kyung-jin YOU, Hyun-chool SHIN
Dept. of Electronic Engineering, Soongsil University, Seoul 156- 743, Korea
Abstract-This paper presents a novel method for inferring the odor based on neural activities observed from rats' main olfactory bulbs. Multi -channel extra-cellular single unit recordings are done by micro-wire electr odes (Tungsten, 50 μm, 32 channels) implanted in the mitral/tufted cell layers of the main olfactory bulb of anesthetized rats to obtain neural respons es to various odors. Neural response as a key feature is measured by subtraction of neural firing rate before stimulus from after. For odor inference, the autho rs develop a decoding method based on the ML estimation. The results show that the average decoding accuracy is about 100.0%, 96.0%, and 80.0% wi th three rats, respectively. This work has profound implications for a novel bra in-machine interface system for odor inference.
Key words-olfactory; odorants; inference; neural decodi ng; neural signal processing; neural activity
Manuscript Number: 1674-8042(2010)01-0081-05
dio: 10.3969/j.issn.1674-8042.2010.01.17
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