Activation in the neural network responsible for categorization and recognition reflects parameter changes.

ABSTRACT: According to various influential formal models of cognition, perceptual categorization and old-new recognition recruit the same memory system. By contrast, the prevailing view in the cognitive neuroscience literature is that separate neural systems mediate perceptual categorization and recognition. A direct form of evidence is that separate brain regions are activated when observers engage in categorization and recognition tasks involving the same types of stimuli. However, even if the same memory-based comparison processes underlie categorization and recognition, one would not expect to see identical patterns of brain activity across the tasks; the reason is that observers would adjust parameter settings (e.g., vary criterion settings) across the tasks to satisfy the different task goals.

SUBMITTER: Nosofsky RM 

PROVIDER: S-EPMC3252895 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature