Unit 3.1.3 Synaptic Plasticity

Question 1

Synaptic plasticity

Answer 1

• Specific changes that occur within the synapse, between neurons
• In response to experience

Question 2

Long-term potentiation

Answer 2

• Long-lasting strengthening of synaptic connections
• As a result of repeated activation of a neural pathway

Question 3

Long term depression

Answer 3

• Long-lasting weakening of synaptic connections
• As a result of repeated low-level activation

Question 4

Sprouting

Answer 4

• The growth of axon or dendrite fibres at the synapse
• Allowing for new synapses to form

Question 5

Filigree appendage

Answer 5

• Fibre
• Grows by sprouting from the axon terminal of the presynaptic neuron

Question 6

Synaptogenesis

Answer 6

• Formation of new synapses
• Results from the process of sprouting

Question 7

Pruning

Answer 7

• Removal of excess neurons + synaptic connections
• To increase the efficiency of neuronal transmissions

Question 8

Rerouting

Answer 8

• Formation of new connections between neurons
• To establish alternative neural pathways