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13 Cards in this Set
- Front
- Back
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Habituation |
Is the reduction in neurone stimulation due to repeated stimulation. This causes a reduction in the release of neurotransmitters. |
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How does habituation happen? |
1. If a signal in the environment is constantly present it will be ignored. 2. Neurones that are constantly stimulated run out of synaptic vessels. 3. This means they are unable to stimulate the post synaptic neurone. 4. And this results in habituation. |
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What is memory based on and how is it achieved? |
Memory is based on strengthening synapses. This is achieved through increasing the number of post synaptic neurones. |
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What are sensory receptors? |
These are specialised cells that can detect changes in our surroundings. They are energy transducers that convert one form of energy into another. |
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What is a stimulus? |
It is a change in energy levels in an environment. |
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What do sensory receptors convert energy into? |
The convert it into a form of electrical energy. |
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Write out the different stimuluses, their receptors and energy change? |
Back (Definition) |
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List the 3 neurones and what each of them do? |
Back (Definition) |
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What are the similarities and differences between neurones? |
Back (Definition) |
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What is the resting potential? |
It the voltage or potential difference across a neurone when it is at rest. It is -60mv and the membrane is polarised. |
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Describe and explain how the resting potential is maintained? |
Back (Definition) |
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Action potential |
Is the depolarisation of the cell membrane so that the inside is more positive than the outside, with a potential difference of +40mV. |
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Describe and explain how an action potential is generated? |
Back (Definition) |
