PSYB65H3 Chapter Notes -Supplementary Motor Area, Dorsolateral Prefrontal Cortex, Premotor Cortex
Document Summary
Frontal lobe = all tissue anterior to the central sulcus = 20% of the neocortex. Inferior (ventral) prefrontal cortex: sometimes called the orbitofrontal cortex due to relation to eye socket. Many areas in frontal cortex are multimodal deal with many different kinds of sensory information. People with frontal-lobe injury cannot handle a situation with many different details. Planning in advance and selecting from many options. Keep track of past occurrences and chains of events. Ignoring extraneous stimuli and focusing on the task at hand. The frontal lobe contains systems that are implement different behavioural strategies for dealing with external and internal cues. Motor cortex is the mechanisms for executing individual movements. The premotor cortex selects the motions to be executed. This is mainly in response to external cues. The supplementary premotor regions contributes internal cues when there are no external cues available. The supplementary motor region is involved in the selection and direction of motor sequences.
