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Decoding Grasp and Speech Signals from the Cortical Grasp Circuit in a Tetraplegic Human

Overview
Journal Neuron
Publisher Cell Press
Specialty Neurology
Date 2022 Apr 1
PMID 35364014
Authors
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Abstract

The cortical grasp network encodes planning and execution of grasps and processes spoken and written aspects of language. High-level cortical areas within this network are attractive implant sites for brain-machine interfaces (BMIs). While a tetraplegic patient performed grasp motor imagery and vocalized speech, neural activity was recorded from the supramarginal gyrus (SMG), ventral premotor cortex (PMv), and somatosensory cortex (S1). In SMG and PMv, five imagined grasps were well represented by firing rates of neuronal populations during visual cue presentation. During motor imagery, these grasps were significantly decodable from all brain areas. During speech production, SMG encoded both spoken grasp types and the names of five colors. Whereas PMv neurons significantly modulated their activity during grasping, SMG's neural population broadly encoded features of both motor imagery and speech. Together, these results indicate that brain signals from high-level areas of the human cortex could be used for grasping and speech BMI applications.

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References
1.
Osiurak F, Badets A . Tool use and affordance: Manipulation-based versus reasoning-based approaches. Psychol Rev. 2016; 123(5):534-68. DOI: 10.1037/rev0000027. View

2.
Wilson G, Stavisky S, Willett F, Avansino D, Kelemen J, Hochberg L . Decoding spoken English from intracortical electrode arrays in dorsal precentral gyrus. J Neural Eng. 2020; 17(6):066007. PMC: 8293867. DOI: 10.1088/1741-2552/abbfef. View

3.
McDowell T, Holmes N, Sunderland A, Schurmann M . TMS over the supramarginal gyrus delays selection of appropriate grasp orientation during reaching and grasping tools for use. Cortex. 2018; 103:117-129. DOI: 10.1016/j.cortex.2018.03.002. View

4.
Hecht M, Hillemacher T, Grasel E, Tigges S, Winterholler M, Heuss D . Subjective experience and coping in ALS. Amyotroph Lateral Scler Other Motor Neuron Disord. 2003; 3(4):225-31. DOI: 10.1080/146608202760839009. View

5.
Branco M, Freudenburg Z, Aarnoutse E, Bleichner M, Vansteensel M, Ramsey N . Decoding hand gestures from primary somatosensory cortex using high-density ECoG. Neuroimage. 2016; 147:130-142. PMC: 5322832. DOI: 10.1016/j.neuroimage.2016.12.004. View