Content-specific evidence accumulation in inferior temporal cortex during perceptual decision-making.

ABSTRACT: During a perceptual decision, neuronal activity can change as a function of time-integrated evidence. Such neurons may serve as decision variables, signaling a choice when activity reaches a boundary. Because the signals occur on a millisecond timescale, translating to human decision-making using functional neuroimaging has been challenging. Previous neuroimaging work in humans has identified patterns of neural activity consistent with an accumulation account. However, the degree to which the accumulating neuroimaging signals reflect specific sources of perceptual evidence is unknown. Using an extended face/house discrimination task in conjunction with cognitive modeling, we tested whether accumulation signals, as measured using functional magnetic resonance imaging (fMRI), are stimulus-sp

SUBMITTER: Tremel JJ 

PROVIDER: S-EPMC4340815 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature