A simple psychophysical procedure separates representational and noise components in impairments of speech prosody perception after right-hemisphere stroke.

ABSTRACT: After a right hemisphere stroke, more than half of the patients are impaired in their capacity to produce or comprehend speech prosody. Yet, and despite its social-cognitive consequences for patients, aprosodia following stroke has received scant attention. In this report, we introduce a novel, simple psychophysical procedure which, by combining systematic digital manipulations of speech stimuli and reverse-correlation analysis, allows estimating the internal sensory representations that subtend how individual patients perceive speech prosody, and the level of internal noise that govern behavioral variability in how patients apply these representations. Tested on a sample of N = 22 right-hemisphere stroke survivors and N = 21 age-matched controls, the representation + noise model provides

SUBMITTER: Adl Zarrabi A 

PROVIDER: S-EPMC11219855 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature