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What is the summing up of excitatory and inhibitory signals in a neuron called?
Integration
What is the summing up of the excitatory and inhibitory signals by a neuron called?
Integration
What happens when neurotransmitters communicate an excitatory message to the postsynaptic neuron?
When neurotransmitters communicate an inhibitory message to the postsynaptic neuron:
What are the two types of messages a neuron can send?
Excitatory and inhibitory messages. Excitatory messages increase the likelihood of a postsynaptic neuron firing an action potential, while inhibitory messages decrease this likelihood.
What cause neuron to fire?
The neuron adds up all the excitatory and inhibitory inputs and fires when they reach its threshold of excitation.
How does synaptic integration determine if a nerve impulse is generated or not generated in a neuron?
Synaptic integration in a neuron involves the summation of excitatory and inhibitory signals from multiple synapses. If the overall excitatory input surpasses the inhibitory input, the neuron is more likely to generate an action potential and propagate a nerve impulse. Conversely, if the inhibitory input dominates, the neuron is less likely to generate an action potential.
What determines if an action potential is initiated in the postsynaptic neuron?
Every time neurotransmitter is released from the presynaptic neuron it generates an excitatory post synaptic potential(EPSP) in the postsynaptic neuron. When the EPSP is greater than the threshold for excitation an action potential is generated.
What determines whether the response of a receiving neuron is excitatory or inhibitory?
The type of neurotransmitter.
10 letters. What is a kind of message that increases the likelihood that a neuron will activate?
excitatory message
What is the action of dopamine on the postsynaptic membrane?
Dopamine acts on the postsynaptic membrane by binding to dopamine receptors, which can lead to changes in the postsynaptic neuron's electrical activity and neurotransmitter release. This can modulate various functions in the brain related to reward, motivation, movement, and emotion.
Which one of these statements best characterizes the contingency approach?
A.
What is mean by the all or none response of a neuron?
The simplest sense, the all-or-none principle of neuronal firing means that a neuron will either fire or it won't, there is no "half" firing. When a neuron receives excitatory input.
