Basic components 2 - Retina PNS Everything else Af ferent Neurons PNS CNS E fferent Neurons PNS CNS Interneurons Cerebral Hemispheres 85 of brain

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

View Full Document Right Arrow Icon
19:29 Basic Components Neurons (nerve cells) Electrical signals Neuroglial (glia) Support structure (‘glue’) No electrical signaling (tho can affect conduction speed) Neuron Cell body Dendrites Receive signals from other cells Inputs range from 1 to 100,000 Axons Determines whether the cell will fire Integration at axon hillock Output Myelinated (covered in myelin, which increases efficiency of firing) Synapse: no physical continuity “talk” thru chemical neurotransmitters About 100 billion neurons in the human brain Gross Anatomy CNS Brain Spinal Cord
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Retina PNS Everything else Af ferent Neurons PNS CNS E fferent Neurons PNS CNS Interneurons Cerebral Hemispheres 85% of brain by weight Folded sheet Gyri (bumps) Sulci (grooves) Cortex (2 mm thick) Layered Heterogeneous Functionally important Cortical Layering Neocortex 6 layers (laminae) Archicortex 4 layers Hippocampus Paleocortex 3 layers Ventral View: Optic Chiasm Receive imagery input from your eyes Olfactory bulb/tract Receive input from your nose Basal Ganglia 19:29 19:29...
View Full Document

This note was uploaded on 03/08/2011 for the course PSY 341K taught by Professor Gilden during the Spring '08 term at University of Texas at Austin.

Page1 / 4

Basic components 2 - Retina PNS Everything else Af ferent Neurons PNS CNS E fferent Neurons PNS CNS Interneurons Cerebral Hemispheres 85 of brain

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