NSCI 323 Lecture Notes - Lecture 5: Capybara, Human Body Weight, Allometry
30 Sep 2017
School
Department
Course
Professor
Document Summary
Excitatory; project out of cell use glutamate inhibiting neurones that project laterally. Cortex evolution highlights homologous areas in the cortex of different mammals shared by all (visual, auditory, somatosensory) there was a common ancestor that had the three different areas cortexes are all different in shape and size ment. Brain size vs. neuron number capybara live with squirrel monkeys monkeys brains are very tiny but is sharper. 4 glia for 1 neuron in non-primates number of cortical neurons increases as cortex mass increases except for primates number of cortical neurones increases as density decreases stabilizes for primates. Neurogenesis different sites where neurones can be generated. Ncx -> edge of ventricle -> gives rise to neurones. After neurogenesis, rgc and basal rgc transform into astrocytes. for parietal neurons neurons migrate outward from the ventricular zone and settle in an orderly, inside-out sequence. Brdu is used as a marker of cell division to estimate the progenitors" cell cycle.
