anatomy_2011

anatomy_2011 - Bi 150 Anatomy and Organization of the...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Bi 150 Anatomy and Organization of the Nervous System Oct. 26, 2011 1 Ralph Adolphs radolphs@hss.caltech.edu OfFce: 61 Broad 2 Basic Anatomy of the Nervous System (Vision: phototransduction) Vision: Retina to Cortex Vision: higher-level Audition Somatosensation Motor System (Circadian Rhythms) (Olfaction) Learning & Memory II Learning and Memory III (Alzheimers & Parkinsons) Autism Emotion and social behavior Monoamines and mood (Schizophrenia) 3 Reading: Chapters 1, 17 occasional quizzes 4 Overview and interesting facts Terms Gross structure Spatial orientation Major pathways Parts of Cortex Methods 5 The Human Brain in Perspective ~20,000 protein-coding genes in the genome >100,000 distinct neuronal phenotypes ca. 10^11 neurons ca. 10^ 14 connections astronomical number of ensembles unbounded number of mental states? 20,000-30,000 neurons per mm3 4 km axons per mm3 2-4 mm cortical thickness ca. 10^9 synapses under mm2 6 Information is encoded in the wiring of the brain. This depends in large part on experience. 7 8 9 Intelligence and Brain Size SMALLER BRAIN THAN EXPECTED Ostrich Blue whale Rat Pigeon Lion LARGER BRAIN THAN EXPECTED Parrot Crow + Jay Chimp Human Brain Size (log g) Body Size (log g) 100 1000 10 1 100, 000 10, 000 10 Human brains are unusually large.-adult human brains are unusually large-newborn human brains are unusually small-humans are very altricial (the opposite of precocious) 11 Noteworthy inventions:--myelin: vertebrates--neocortex: mammals--corpus callosum: placental mammals--large prefrontal cortex: primates--mirror neurons: primates--Von Economo neurons: apes 12 13 CNS Central Nervous System PNS Peripheral Nervous System Afferent (vs. Efferent) Input (output) to (from) a certain structure...
View Full Document

This note was uploaded on 01/03/2012 for the course BI 150 taught by Professor Kennedy,m during the Fall '08 term at Caltech.

Page1 / 10

anatomy_2011 - Bi 150 Anatomy and Organization of the...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online