Linking perception, cognition, and action: psychophysical observations and neural network modelling.

ABSTRACT: It has been argued that perception, decision making, and movement planning are in reality tightly interwoven brain processes. However, how they are implemented in neural circuits is still a matter of debate. We tested human subjects in a temporal categorization task in which intervals had to be categorized as short or long. Subjects communicated their decision by moving a cursor into one of two possible targets, which appeared separated by different angles from trial to trial. Even though there was a 1 second-long delay between interval presentation and decision communication, categorization difficulty affected subjects' performance, reaction (RT) and movement time (MT). In addition, reaction and movement times were also influenced by the distance between the targets. This implies that not

SUBMITTER: Mendez JC 

PROVIDER: S-EPMC4100910 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature