null
US
Sign In
Sign Up for Free
Sign Up
We have detected that Javascript is not enabled in your browser. The dynamic nature of our site means that Javascript must be enabled to function properly. Please read our
terms and conditions
for more information.
Next up
Copy and Edit
You need to log in to complete this action!
Register for Free
409504
Synapses and Neural Pathways
Description
Degree Psychology (Neuroscience) Mind Map on Synapses and Neural Pathways, created by natalieclark29 on 02/12/2013.
No tags specified
neuroscience
psychology
psychology
neuroscience
degree
Mind Map by
natalieclark29
, updated more than 1 year ago
More
Less
Created by
natalieclark29
over 10 years ago
41
1
0
Resource summary
Synapses and Neural Pathways
How do we measure communication between neurons?
Electrically: neurophysiology
Branch of physiology that deals with the flow of ions
Electroencephalogram (EEG)
Advantages
Non-invasive
High temporal resolution
Disadvantages
Low spatial resolution
Only record from cortex
Multiple unit recording
Records brain rhythms
Synchronous firing produces measurable waves of activity
Advantages
Average spatial resolution
Average temporal resolution
Disadvantages
Only records groups of neurons
Invasive - mostly used on animals
Single unit extracellular
Advantages
Very high spatial resolution (multiple single neurons)
High temporal resolution (action potentials)
Disadvantages
Invasive
No knowledge of intracellular events
Intracellular
Advantages
Very high spatial resolution
Examine sub-cellular processes
Disadvantages
Fragile electrodes
One cell at a time
Only in anaesthetised animals
Chemically: microdialysis
Invasive procedure
Slow - sample every few minutes
Communication between neurons
Frequency is important, not size
If the stimulus is weak, only a few action potentials will be fired.
Spike timing
Rhythms occur when a lot of neurons fire action potentials at the same time.
Timing of an action potential relative to a rhythm can change the information it carries
Neurotransmitters work on post-synaptic receptors on dendrites
Ionotropic receptors
Transmit info quickly
Simple mechanism
Metabotropic receptors
Slow-acting and long lasting
Complex mechanism
Two types of neurotransmitter
Excitatory
Causes depolarisation
Glutamate
Inhibitory
Causes hyperpolarisation; stops action potentials from being generated
GABA
Excitation/inhibition caused by open ion channels
Four types
Autoreceptors
Bind to neurotransmitters released by the neuron on which they are situated
Can be anywhere on cell membrane; usually inhibitory; help self-regulate neurons
Show full summary
Hide full summary
Want to create your own
Mind Maps
for
free
with GoConqr?
Learn more
.
Similar
History of Psychology
mia.rigby
Biological Psychology - Stress
Gurdev Manchanda
Bowlby's Theory of Attachment
Jessica Phillips
Psychology subject map
Jake Pickup
Psychology A1
Ellie Hughes
Memory Key words
Sammy :P
Psychology | Unit 4 | Addiction - Explanations
showmestarlight
The Biological Approach to Psychology
Gabby Wood
Chapter 5: Short-term and Working Memory
krupa8711
Cognitive Psychology - Capacity and encoding
T W
The working memory model
Lada Zhdanova
Browse Library