1146397
Descripción
Mapa Mental por Shirley Barker, actualizado hace más de 1 año
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Creado por Shirley Barker
hace más de 10 años
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Neural basis
of learning
- Synapse formation
during learning
- Involves creation of new neural pathways OR
the strengthening of existing neural pathways.
- Neural pathway - bundle of
myelin-covered neurons (white
matter) that provide a
connection between one part
of the nervous system and
another
- Neural pathway - bundle of
myelin-covered neurons (white
matter) that provide a
connection between one part
of the nervous system and
another
- Involves synaptogenesis
- Synaptogenesis -process of moulding
or forming new
synapses are formed
- Synaptogenesis -process of moulding
or forming new
synapses are formed
- Involves creation of new neural pathways OR
the strengthening of existing neural pathways.
- Synapse
- Made up of axon terminal
(presynaptic neuron),
synaptic gap and dendrite
(postsynaptic nueron)
- During learning the presynaptic
neuron releases glutamate into
the synaptic gap.
Nota:
- Glutamate the main excitatory neurotransmitter involved in learning The repeated release of glutamate releases dopamine and leads to an increase in dendritic spines - growth from the dendrites toward the axon terminals.
- When new learning occurs the neurons
form new connections with each other.
- 'Sprouts' - term for the new growth
that occurs from the axon terminals
towards dendrites
Nota:
- It is okay to say that new 'sprouts' rather than fifgree appendages occur when something is learned.
- New growth also occurs between
dendrites towards the axon terminals. This
makes the dendrites more sensitive to
future firing from neighbouring neurons.
- 'Sprouts' - term for the new growth
that occurs from the axon terminals
towards dendrites
- Made up of axon terminal
(presynaptic neuron),
synaptic gap and dendrite
(postsynaptic nueron)
- Strengthening of
neural pathway
- Enables the newly learnt information to be transferred
from one neuron to the next.
- The more the neural pathway is activated during learning the
more it is strengthened and the less likely learning will be
forgotten.
- If a particular neural pathways are not
activated the learning may be forgotten;
synapses become weakened through
infrequent use.
- Enables the newly learnt information to be transferred
from one neuron to the next.
- Study of neurobiological basis of
learning has just begun!
- The more we understand the more we can apply our
understanding to treat phobias, learning
disabilities, psychological orders etc.
- The more we understand the more we can apply our
understanding to treat phobias, learning
disabilities, psychological orders etc.
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