Psych Neural Plasticity

What is Learning?

• Relatively permanent change in behaviour that occurs as a result of experience

• An active information processing system that encodes, stores and receives information

What is Memory?

• Relatively permanent change in behaviour that occurs as a result of experience

• An active information processing system that encodes, stores and receives information

What are some extra facts about Learning?

• can be: un/intentional, easy or difficult

• Happens in a variety of ways, some things cannot be learned (reflex actions, maturation

• Personal interpretation of the world (not a replica of it)

• Change over time, can be lost

What are some extra facts about Memory?

• can be: un/intentional, easy or difficult

• Happens in a variety of ways, some things cannot be learned (reflex actions, maturation

• Personal interpretation of the world (not a replica of it)

• Change over time, can be lost

What is Hebb's Rule? (Synaptic Plasticity)

• "Neurons that fire together, wire together." (stronger connection = more likely to fire)

• LTP improves the ability of two neurons

What is Long-term Potentiation and it's effect (LTP)?

• The long-lasting strengthening of synaptic connections, resulting in enhanced or more effective neurotransmission across the synapse.

• Effect: is to improve the ability of two neurons — a presynaptic and a postsynaptic neuron — to communicate with one another at the synapse

• Long-lasting decrease in the strength of synaptic transmission. This results from lack of stimulation of pre- and postsynaptic neurons or prolonged low level stimulation.

• Effect: Postsynaptic neuron becomes less responsive to the neurotransmitter released by a presynaptic neuron and the effect is to weaken the synaptic connection and therefore weaken or even silence communication at the synapse (Use it or lose it)

What is Long-term Depression and it's effect (LTD)?

• The long-lasting strengthening of synaptic connections, resulting in enhanced or more effective neurotransmission across the synapse.

• Effect: is to improve the ability of two neurons — a presynaptic and a postsynaptic neuron — to communicate with one another at the synapse

• Long-lasting decrease in the strength of synaptic transmission. This results from lack of stimulation of pre- and postsynaptic neurons or prolonged low level stimulation.

• Effect: Postsynaptic neuron becomes less responsive to the neurotransmitter released by a presynaptic neuron and the effect is to weaken the synaptic connection and therefore weaken or even silence communication at the synapse (Use it or lose it)

What is a Neurohormone?

• A chemical messenger manufactured by a neuron that is released into the bloodstream and carried to target neurons or cells.

• Chemical substances produced by neurons which carry messages to other neurons in muscles, organs or other tissues.

What is a Neurotransmitter?

• A chemical messenger manufactured by a neuron that is released into the bloodstream and carried to target neurons or cells.

• Chemical substances produced by neurons which carry messages to other neurons in muscles, organs or other tissues.

Which of the following are about Neurohormones? (Differences Neurohormones/transmitters)

• Secreted into the synaptic gap and deliver their message to adjacent target cells

• Secreted into the blood for transport to target cells

• Messages Travel slowly

• Messages travel rapidly