Internal manipulation of perceptual representations in human flexible cognition: A computational model

Executive functions represent a set of processes in goal-directed cognition that depend on integrated cortical-basal ganglia brain systems and form the basis flexible human behaviour. Several computational models have been proposed for studying cognitive flexibility as key executive function Wisconsin card sorting test (WCST) represents an important neuropsychological tool to investigate it. These clarify aspects underlie flexibility, particularly decision-making, motor response, feedback-dependent learning processes. However, several studies suggest categorisation involved solution WCST include additional stage category representation supports other Surprisingly, all ignore this fundamental they assume decision making directly triggers actions. Thus, we propose novel hypothesis where mechanisms behaviour rely acquisition suitable representations percepts their top-down internal manipulation. Moreover, neuro-inspired model operationalise hypothesis. The capacity support was validated by systematically reproducing interpreting exhibited young old healthy adults, frontal Parkinson patients. results corroborate further articulate manipulation is core process cognition.