PSYC 362 Lecture Notes - Lecture 3: Central Nervous System, Cerebral Cortex, Visual Cortex

• School: Binghamton University
• Department: Psychology
• Course: PSYC 362
• Professor: Maria Romero

Document Summary

The neuraxis is an imaginary line drawn through the spinal cord to the front of the brain. Anatomical directions are understood relative to the neuraxis: anterior (rostral) front of brain; toward the head, posterior (caudal) toward the tail, ventral toward the belly, dorsal toward the back, lateral toward the side, medial toward the middle. The brain can be sectioned in three planes. Three primordial tissues: endoderm inside layer, mesoderm middle layer, ectoderm outer layer. Ectoderm: forms into neural tube that gives rise to the brain and spinal cord. Neural tube related to birth defects: anterior (front) neural pore: failure to close anencephaly, posterior (back) neural pore: failure to close spina bifida. At early stages neural tube divides into: forebrain in the front; will divide, midbrain in the middle; will remain the midbrain (mesencephalon, hindbrain in the posterior part; will divide. Forebrain divides into: diencephalon, telencephalon (2 cerebral hemispheres)