1. Neuroanatomy II Reference: Banich, Ch. 2

2. The Cerebral Cortex Frontal lobes Parietal lobes Temporal lobes Occipital lobes

3. The Cerebral Cortex Central sulcus Sylvian (lateral) fissure

4. Primary Sensory & Motor Areas Primary Visual Cortex Primary Motor Cortex Somatosensory Cortex Frontal Lobe Primary Olfactory Cortex Primary Auditory Cortex Parietal Lobe Temporal Lobe Occipital Lobe

5. 1.Primary Motor Cortex 2.Somatosensory Cortex 3.Primary Visual Cortex 4.(Primary Auditory Cortex) 5.(Primary Olfactory Cortex) Primary Sensory & Motor Areas

6. 1. Primary Motor Cortex Note Crossover:

7. Motor “map” is disproportionate and inverted: 1. Primary Motor Cortex

8. Damage: - poor touch discrimination - disturbed sense of body position, size PatientArea of weakness L/R cortex? Region affected? Fredleft leg Maryright side of face right left high low 1. Primary Motor Cortex

9. 2. Somatosensory Cortex Tactile information, pressure, pain, muscle movements Also a crossover Also disproportionate and inverted:

10. 2. Somatosensory Cortex

11. Damage -> poor touch discrimination, disturbed sense of body position, size. Mrs. K complained that her hand felt "enormous, out of proportion with the rest of my body. It feels like I was wearing a huge, thick baseball glove. Sometimes it seems to me as though my hand is hot and cold at the same time". 2. Somatosensory Cortex

12. 3. Primary Visual Cortex Early processing of visual information Also a crossover Also disproportionate (“retinotopic”) and inverted

13. 3. Primary Visual Cortex

14. ØDamage: ØBlindness in corresponding area of visual space: 3. Primary Visual Cortex Normal view of room

15. 3. Primary Visual Cortex Damage to Right PVC

16. 3. Primary Visual Cortex Damage to lower part of Left PVC

17. 3. Primary Visual Cortex Scotoma (lower right PVC)