3.4 Cognitive Psychology

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3. a. A stimulus triggers the sensory neuron in the tail, which then sends signals to the motor neurons. The sea slug will withdraw its gill in response to the new stimulus. If the stimulus is harmless and it is repeated, this will cause the sea slug to withdraw its gill as a defense mechanism less frequently. When the sea slug experiences the harmless repeated stimulus, the animal’s awareness to it decreases during the process of habituation. In other words, the repeated stimulus to the tail leads to a decrease in the amount of the excitatory postsynaptic potential.
b. Classical conditioning can be witnessed in the gill-withdrawal response of sea slugs. The conditioning take places when the sensory neuron is triggered by the conditioned stimulus

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