Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
|
four main brain lobes and functions |
frontal - motor function, problem solving, judgment, impulse control parietal - sensation and perception, integrating sensory input temporal - auditory and memory occipital - vision |
|
|
how many neurones in the brain and how many connections? |
85 billion ish, making between 100 and 10,000 connections with other neurones |
|
|
how does information processing occur? (with regards to neurones) |
the inside of a neurone is negatively charged compared to the outside (~70mV) due to the movement of charged ions across a cell membrane via specific ion channels |
|
|
how is information transmitted within the cell? |
transient alterations in the membrane potential |
|
|
two main types of integration of a graded potential |
temporal and spatial summation |
|
|
voltage/action potentials advantages |
voltage potentials are good for integrating information action potentials are good for sending information over long distances; an action potential in an axon either happens or it doesn't, depending on whether a particular threshold is reached (decided in the axon hillock) |
|
|
TTX tetrodotoxin |
blocks ion flow through channels that generate action potentials. 10,000 times deadlier than cyanide |
|
|
'pulses' in dendrites regarding size |
'pulse' in dendrites can vary in size i.e it is a graded potential |
