1. The External Brain Unit 2: Bio Basis of Behavior Lesson 3

2. Objectives: Distinguish between characteristics of the left and right hemispheres of the brain. Identify the location and function of the four lobes of the brain. Locate the specialized association areas of the cerebral cortex.

3. Cerebral Cortex & Cerebrum Wrinkled covering  Gyri- bumps  Sulci- grooves, fissures Hemispheres  2 halves of brain (L-R) Corpus Callosum  Wide band of nerve fibers connecting hemispheres

4. Lateralization Roger Sperry (1960s) Each hemisphere is responsible for different mode of thinking…we prefer one over another.

5. Left Brain/Right Brain/Whole Brain Test

6. Write down which of the pair best describes you… Names Faces Organized Spontaneous Realistic Fantasy Logic Intuition Well-structured Open-ended Language Picture Creative Not creative Humorous Serious Details Main Idea Systematic Plans Exploration Vegetables Fruits Micromanage Delegate Emotional Reserved All left hand options = right brain behaviors / preferences All right hand options = left brain behaviors / preferences

7. Split Brain Damage Corpus Callosotomy  Sever C 2, reducing communication between 2 hemispheres Hemispherectomy  Removal or disabling of entire cerebral hemisphere

9. Split Brain Experiments Chimeric Figures Info from r visual field to l hemisphere and vice versa Say if man/woman?  Language = Left = Man Point to man/woman?  Visual = Right = Woman

10. Frontal Lobe Front of cerebral cortex (blue) “Executive Director”  Reasoning, planning, coordination, problem solving, working memory  Emotion, socialization, personality, sexuality  Motor movement

11. Parietal Lobe Behind central fissure (green) Sensation and perception  Touch, temp, pain, location of limbs  Number relations  Object Manipulation

12. Occipital Lobe In rear portion of cortex (yellow) Visual processing center

13. Temporal Lobe On sides of cortex (pink) Auditory Processing, memory formation, language comprehension, taste & smell

14. Association Areas Involved in higher mental functions. Interpret, integrate, act on incoming info.

15. Closure Which side of the brain…  dominates in left-handed pitcher?  dominates in right-handed batter?  Better able to use info that is heard?  Better able to use info that is seen?  Shows a wide range of emotion?  Better at tasks involving creativity?  Better at tasks involving application?