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George E. Carvell, PhD, PT   University of Pittsburgh
 
HUMAN CEREBRAL CORTICAL CONTRIBUTIONS TO BEHAVIOR *
Through extensive intrinsic and extrinsic connections, the human cerebral cortex extends our sensorimotor repertoire to include:
1.  FRACTIONATION - the ability to move body parts independently and to localize motor actions to a limited set of appropriate muscles.
2.   SPEED, AGILITY, ACCURACY, AND ADAPTABILITY TO GOAL- DIRECTED MOTOR BEHAVIOR.
3.   REFINED MOTOR LEARNING AND ENHANCED MOTOR PERFORMANCE IN SKILLED TASKS.
4.   ABILITY TO DEFINE AND TO REFINE THE PERCEPTIONS OF as well as THE MANIPULATIONS OF OUR ENVIRONMENT
- by superb manual dexterity & eye-hand coordination for use of tools and instruments of human creativity
- by improved control of communication skills and skilled expressions of one's being: e.g., reading, writing, drawing, painting, sculpting, dancing, sports, music, computations and other expressions of abstract reasoning and thought.
5.   CREATION AND TRANSFORMATION OF OUR IDEAS, THOUGHTS, AND WILL INTO IMMEDIATE OR DELAYED ACTIONS AS APPROPRIATE FOR THE SITUATION; this requires planning, programming, and judgment for the generation & regulation of goal-directed purposive behavior.
* Copyright  GEC 1990 (revised 2000)