Lecture 10.F10

Lecture 10.F10 - Neuroscience 106: Lecture 10 - The Retina...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Neuroscience 106: Lecture 10 - The Retina Assignments: In Bear et al. study Chapter 9. TODAY'S LECTURE: I. Introduction to SYSTEMS neuroscience A. Thus far the focus of the course has been on the cellular/molecular level. B. The rest of the course will be focused on systems level. We will apply what we have already learned to the systems level. C. Systems are circuits of neurons that interact to perform some function (for example the visual system, the auditory system, the pain sensing system, memory systems, motor systems, etc.). D. Problems in understanding systems. The unknowns are greater. The complexity is vastly greater. The operation of many systems is highly counterintuitive. E. Neural Codes : A fundamental concept. The essential idea is that the meaning of activity (e.g., action potentials) by a neuron depends on the system it is part of. Action potential by a neuron in a pain system would yield the perception of pain; action potential by a neurons in the visual system would yield the perception of sight; action potentials by a neuron in a motor systems would cause movement; action potential by a neuron in a system underlying emotion might cause the feeling of fear or another emotion. 1. Also, systems have subsystems and neurons in different subsystems code for different functions. For example, in the visual system, different areas and groups of neurons perform different functions. Some neurons are responsible for detecting the form of a visual object; others are responsible for detecting color (they code for color), other for movement (they code for movement), others for location (they code to location of an object in the visual field), etc. The action potential produced by these different neurons mean different things , i.e. they "code" for different perceptions/meanings etc. 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
2. What is a neuron coding? What attribute of the visual world is a neuron in the visual system encoding? All that you measure when you record membrane voltage is action potentials, but action potentials in different neurons mean different things. How do neuroscientists determine the function of a neuron or of a system of
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/10/2010 for the course CBNS 106 taught by Professor Korzus during the Fall '08 term at UC Riverside.

Page1 / 7

Lecture 10.F10 - Neuroscience 106: Lecture 10 - The Retina...

This preview shows document pages 1 - 3. Sign up to view the full document.

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