Large-scale single-neuron speech sound encoding across the depth of human cortex.

ABSTRACT: Understanding the neural basis of speech perception requires that we study the human brain both at the scale of the fundamental computational unit of neurons and in their organization across the depth of cortex. Here we used high-density Neuropixels arrays^1-3 to record from 685 neurons across cortical layers at nine sites in a high-level auditory region that is critical for speech, the superior temporal gyrus^4,5, while participants listened to spoken sentences. Single neurons encoded a wide range of speech sound cues, including features of consonants and vowels, relative vocal pitch, onsets, amplitude envelope and sequence statistics. Neurons at each cross-laminar recording exhibited dominant tuning to a primary speech feature while also containing a substantial propo

SUBMITTER: Leonard MK 

PROVIDER: S-EPMC10866713 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature