Decoding naturalistic movie clip identities from diffuse optical tomography measures of human brain activity

Zachary E. Markow; Kalyan Tripathy; Jason W. Trobaugh; Alexa M. Svoboda; Mariel L. Schroeder; Sean M. Rafferty; Edward J. Richter; Adam T. Eggebrecht; Mark A. Anastasio; Joseph P. Culver

doi:10.1117/12.2578609

5 March 2021 Decoding naturalistic movie clip identities from diffuse optical tomography measures of human brain activity

Zachary E. Markow, Kalyan Tripathy, Jason W. Trobaugh, Alexa M. Svoboda, Mariel L. Schroeder, Sean M. Rafferty, Edward J. Richter, Adam T. Eggebrecht, Mark A. Anastasio, Joseph P. Culver

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Proceedings Volume 11629, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics; 116291K (2021) https://doi.org/10.1117/12.2578609
Event: SPIE BiOS, 2021, Online Only

Abstract

Functional magnetic resonance imaging has decoded complex information about naturalistic stimuli using brain responses, but other non-invasive technologies have not achieved similar decoding capabilities. To evaluate feasibility of naturalistic visual decoding with diffuse optical tomography (DOT), a 6.5-mm-spaced optode grid was employed to decode which of four naturalistic, 90-second, audio-free movie clips was viewed by human subjects. Over 85% average decoding accuracy was achieved using a simple template-matching decoder, and this exceeded the accuracy from a sparser optode grid with 13-mm spacing. High-density DOT is therefore promising for more-complex neural decoding tasks in the future.

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Zachary E. Markow, Kalyan Tripathy, Jason W. Trobaugh, Alexa M. Svoboda, Mariel L. Schroeder, Sean M. Rafferty, Edward J. Richter, Adam T. Eggebrecht, Mark A. Anastasio, and Joseph P. Culver "Decoding naturalistic movie clip identities from diffuse optical tomography measures of human brain activity", Proc. SPIE 11629, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics, 116291K (5 March 2021); https://doi.org/10.1117/12.2578609

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KEYWORDS

Brain

Functional magnetic resonance imaging

Neuroimaging

Electroencephalography

Blood

Diffuse optical tomography

Interfaces

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