The role of human intraparietal sulcus in evidence accumulation revealed by EEG and model-informed fMRI: IPS accumulates evidence during decision-making.

ABSTRACT: Sequential sampling models propose that the repeated sampling of sensory information is a fundamental component of perceptual decision-making. Electroencephalographic investigations in humans have demonstrated motor-independent representations of evidence accumulation, but such observations have seldom been made in neuroimaging studies exploring the neuroanatomical origins of evidence accumulation. Here, we aimed to reveal the neuroanatomical locus of sensory evidence accumulation in the human brain by regressing an electrophysiological marker of evidence accumulation (centroparietal positivity, CPP) against changes in blood oxygen level-dependent (BOLD) signal during perceptual decision-making. Our cross-modal imaging approach revealed a cluster within left intraparietal sulcus (IPS), loc

SUBMITTER: Wongtrakun J 

PROVIDER: S-EPMC11838566 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature