The central nervous system interprets the strength of a stimulus based on which of the following?Multiple choice question.The frequency of action potential generated by sensory cellsThe amount of open gated ion channels in a sensory cellThe size of the receptor potential in sensory cells
Question
The central nervous system interprets the strength of a stimulus based on which of the following?Multiple choice question.The frequency of action potential generated by sensory cellsThe amount of open gated ion channels in a sensory cellThe size of the receptor potential in sensory cells
Solution
The central nervous system interprets the strength of a stimulus based on:
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The frequency of action potential generated by sensory cells: The frequency of action potentials (or nerve impulses) generated by sensory cells can indicate the intensity of a stimulus. The higher the frequency of action potentials, the stronger the perceived stimulus. For example, a light touch might generate a low frequency of action potentials, while a hard touch generates a high frequency.
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The amount of open gated ion channels in a sensory cell: This is not typically how the strength of a stimulus is interpreted. While the opening of gated ion channels is crucial for generating an action potential, it's the frequency of these action potentials that typically indicates the strength of a stimulus.
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The size of the receptor potential in sensory cells: The receptor potential is the change in voltage across a sensory cell's membrane in response to a stimulus. A larger receptor potential can trigger a higher frequency of action potentials, indicating a stronger stimulus.
So, the central nervous system interprets the strength of a stimulus based on the frequency of action potential generated by sensory cells and the size of the receptor potential in sensory cells.
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