Decoding spoken English from intracortical electrode arrays in dorsal precentral gyrus.

ABSTRACT:

Objective

To evaluate the potential of intracortical electrode array signals for brain-computer interfaces (BCIs) to restore lost speech, we measured the performance of decoders trained to discriminate a comprehensive basis set of 39 English phonemes and to synthesize speech sounds via a neural pattern matching method. We decoded neural correlates of spoken-out-loud words in the 'hand knob' area of precentral gyrus, a step toward the eventual goal of decoding attempted speech from ventral speech areas in patients who are unable to speak.

Approach

Neural and audio data were recorded while two BrainGate2 pilot clinical trial participants, each with two chronically-implanted 96-electrode arrays, spoke 420 different words that broadly sampled English phonemes. Phoneme onsets wer

SUBMITTER: Wilson GH 

PROVIDER: S-EPMC8293867 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature