y12 stuff Flashcards
LTP
long-lasting strengthening of synaptic connections resulting in more effective transmission across the synapse.
the more the neural pathway is used, the more it is strengthened
LTD
long-lasting weakening of synaptic connections in which the post syn neuron reaches sub-threshold level
key processes of classical conditioning
acquistion
extinction
spontaneous recovery
sim generalisation
stim discrimination
three phase model of operant conditioning
antecedent- what precedes and prompts a particular response
behaviour- response
consequence-what follows the response
classical conditioning
a simple form of learning that occurs through repeated association of two different stimuli
operant conditioning
a kind of learning for which the consequence of an action determines the likelihood that it will be preformed again in the future
lock and key
neural process where the distinct molecular structure of the neurotransmitter being matched by the receptor site whose shape is comp and specific
ecitatory nt
inc the likelyhood of post syn firing
inhibitory nt
decrease th likelihood of post syn firing
alzheimer’s disease
a progressive neurological disorder that causes the brain to shrink and dcells to die
a continuos decline in thinking behavioural and social skills
causes of AD
occurs when proteins in the brain are not synthesised properly
plaques and tangles
plaques
fragments of a larger protein that cluster together and prevent neural communication
(extracellular)
tangles
tau proteins cahnge shape and organise themselves into structures called tangles which eventually kill the cells
(intraneuronal)
function of hippo
memory
