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NEET Biology Neural Control and Coordination Question Bank Self Evaluation Test - Neural Control and Co-ordination

  • question_answer
    The neural phenomenon depicted by the given diagram is best described as:   

    A) Spatial summation

    B) Temporal summation

    C) Presynaptic excitation

    D) Presynaptic inhibition

    Correct Answer: A

    Solution :

    [a] The diagram shows that three different stimuli arrive at the same time and evoke a large EPSP that leads to an action potential, while less than three do not. This is spatial summation. Temporal summation involves the same stimulus arriving in rapid succession


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