2. Midbrain or Mesencephalon

4. Ventral surface

5. Posterior surface

6. Lateral surface

7. Tectum
Cerebral peduncle

9. Section paralell to the inferior colliculus
1- inf colliculus nuclei
2- parabigeminal area
3- periaqueductal gray mater
4- mesencephalic nucleus of v nerve
5- trochlear nucleus
6-substantia nigra
7- ventral tegmental area of Tsai
8- interpeduncular nucleus

10. 1- inf. colliculus nuclei
External nucleus

11. 1- Inferior colliculus

12. 2- Parabigeminal Area

13. 3- Periaqueductal gray mater

14. 4- Mesencephalic nucleus of trigeminal nerve
Pesudounipolar neuron

15. 4- Mesencephalic nucleus of trigeminal nerve

16. 5- Trochlear nucleus(IV)

17. 5- Trochlear nucleus

18. 5- Trochlear nucleus

19. 6- substantia nigra

20. 6- substantia nigra
dopamin
Pars compact
GABA
Pars reticular

21. 6- substantia nigra

22. 6- substantia nigra
(resting tremor)

23. Experimental parkinson
Monkey
Meperidine analoge
Like MPTP(1methyl 4phenyl 1,2,3,6 tetrahydropyridine)

24. 7- Ventral tegmental area of Tsai
pleasure

25. 8- Interpeduncular nucleus

28. Important pathways 1-Curs cerebri 2-medial lemniscus
3- lateral lemniscus
4- spinal and trigeminal lemniscus
5- Decussation of the sup. Cerebellar peduncle
6- Medial longituidinal fasiculus

29. Crus cerebri

31. Section paralell to the superior colliculus
1- sup. colliculus nuclei
2- periaqueductal gray mater
3- mesencephalic nucleus of v nerve
4- occulomotor nuclear complex
5- red nucleus
6-substantia nigra
7- ventral tegmental area of Tsai
8- interpeduncular nucleus

32. sup. colliculus nuclei

33. sup. colliculus nuclei 4 3 2 1 5

34. sup. colliculus nuclei

35. 3- occulomotor nuclear complex

36. Edinger westphal

37. Edinger westphal

38. Edinger westphal

39. red nucleus

40. red nucleus
Rostral parvicellular
Caudal magnocellular

41. kennedy (1990)
Rubrospinal pathway
Corticospinal pathway