Bipn140 Lect 7 Notes Oct10

Bipn140 Lect 7 Notes Oct10 - BIPN 140 LECT #7 1 DKBerg...

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

View Full Document Right Arrow Icon
BIPN 140 LECT #7 1 DKBerg SYNAPTIC TRANSMISSION I I. Synapses – specific contact between a neuron and another cell (neuron or effector cell) for signal transmission A. Features/Functions 1. Local transmission – specific “wiring diagram” 2. Rapid & reproducible – produces behaviors 3. Synaptic plasticity – encode changes (e.g. learning & memory) B. Challenges 1. Molecular machinery 2. Target selection 3. Synaptic plasticity C. Types – Electrical vs. Chemical: **FIGURE 5.1A-B**. II. Electrical Synapses A. Structure 1. Gap between pre- & postsyn membranes (“gap junctions”) 2. Connexions: proteins comprising membrane pores B. Function 1. Direct charge transfer. (Attenuation determined by coupling) 2. Rapid transmission **FIGURE 5.2A-C**. III. Chemical Synapses A. Overview – 1. Presynaptic: AP ± depolarization of terminal ± calcium influx locally ± SV exocytosis & NT release
Background image of page 1

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

View Full DocumentRight Arrow Icon
BIPN 140 LECT #7 2 DKBerg 2. Synaptic cleft: rapid diffusion of NT (from pre- to post-) 3. Postsynaptic: NT binds to Rs, activates, ions flow – postsynaptic potential (PSP). __**FIGURE 5.3**_. B. Neurotransmitters (NTs) 1. Criteria for identification: (a) present in syn term, (b) presyn stim
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 10/30/2010 for the course BIPN BIPN 140 taught by Professor Spitzer during the Fall '07 term at UCSD.

Page1 / 4

Bipn140 Lect 7 Notes Oct10 - BIPN 140 LECT #7 1 DKBerg...

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