Computational and neural signatures of pre and post-sensory expectation bias in inferior temporal cortex.

ABSTRACT: As we gather noisy sensory information from the environment, prior knowledge about the likely cause(s) of sensory input can be leveraged to facilitate perceptual judgments. Here, we investigated the computational and neural manifestation of cued expectations in human subjects as they performed a probabilistic face/house discrimination task in which face and house stimuli were preceded by informative or neutral cues. Drift-diffusion modeling of behavioral data showed that cued expectations biased both the baseline (pre-sensory) and drift-rate (post-sensory) of evidence accumulation. By employing a catch-trial functional MRI design we were able to isolate neural signatures of expectation during pre- and post-sensory stages of decision processing in face- and house-selective areas of inferior

SUBMITTER: Dunovan K 

PROVIDER: S-EPMC6125426 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature