Parallel encoding of speech in human frontal and temporal lobes.

ABSTRACT: Models of speech perception are centered around a hierarchy in which auditory representations in the thalamus propagate to primary auditory cortex, then to the lateral temporal cortex, and finally through lateral cortical areas to reach the frontal lobe. However, it is unclear if speech-evoked activity in frontal cortex strictly reflects downstream processing from this hierarchical pathway or whether there are long-range parallel connections from the low-level areas (thalamus, primary auditory cortex) to the frontal lobe. Here, we used high-density direct cortical recordings, high-resolution diffusion tractography, and hemodynamic functional connectivity to evaluate for evidence of direct parallel inputs to frontal cortex from low-level areas. We found that neural populations in the fronta

SUBMITTER: Hullett PW 

PROVIDER: S-EPMC12824166 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature