Question:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: There is diminishing responsiveness of sensory systems to prolonged stimulation, as and when a person adopts to new environmental condition.
Reason R: The unchanging stimulation usually shifts into the background of awareness of the person.
In the light of the above statements, choose the most appropriate answer from the options given below
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: There is diminishing responsiveness of sensory systems to prolonged stimulation, as and when a person adopts to new environmental condition.
Reason R: The unchanging stimulation usually shifts into the background of awareness of the person.
In the light of the above statements, choose the most appropriate answer from the options given below
Assertion A: There is diminishing responsiveness of sensory systems to prolonged stimulation, as and when a person adopts to new environmental condition.
Reason R: The unchanging stimulation usually shifts into the background of awareness of the person.
In the light of the above statements, choose the most appropriate answer from the options given below
Show Hint
Sensory adaptation is a biological mechanism of efficiency. If a stimulus does not change, it carries no new information, so our nervous system filters it out and shifts it to the background of awareness.
Updated On: Jul 18, 2026
- Both A and R are correct and R is the correct explanation of A
- Both A and R are correct but R is NOT the correct explanation of A
- A is correct but R is not correct
- A is not correct but R is correct
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Question:
The question asks us to evaluate an Assertion-Reason pair regarding sensory adaptation and how unchanging stimuli are processed by human consciousness.
Step 2: Detailed Explanation:
• Assertion A states that sensory systems show a diminishing responsiveness to prolonged, unchanging stimulation as a person adapts to environmental conditions. This is a true statement that defines sensory adaptation.
• For example, when you walk into a kitchen with a strong coffee smell, you notice it immediately, but after a few minutes, you stop smelling it because your olfactory receptors adapt.
• Reason R states that unchanging stimulation usually shifts into the background of a person's conscious awareness. This is also a true statement.
• From an evolutionary perspective, sensory adaptation is highly adaptive because it prevents our brain from becoming overloaded with constant, irrelevant background noise.
• By filtering out unchanging stimuli (shifting them to the background of awareness), our cognitive resources are freed up to detect novel changes in the environment, which could indicate threats or rewards.
• Therefore, Reason R is a correct explanation for why and how the sensory systems diminish their responsiveness to prolonged stimulation.
Step 3: Final Answer:
Both Assertion A and Reason R are correct, and Reason R is the correct explanation of Assertion A.
The question asks us to evaluate an Assertion-Reason pair regarding sensory adaptation and how unchanging stimuli are processed by human consciousness.
Step 2: Detailed Explanation:
• Assertion A states that sensory systems show a diminishing responsiveness to prolonged, unchanging stimulation as a person adapts to environmental conditions. This is a true statement that defines sensory adaptation.
• For example, when you walk into a kitchen with a strong coffee smell, you notice it immediately, but after a few minutes, you stop smelling it because your olfactory receptors adapt.
• Reason R states that unchanging stimulation usually shifts into the background of a person's conscious awareness. This is also a true statement.
• From an evolutionary perspective, sensory adaptation is highly adaptive because it prevents our brain from becoming overloaded with constant, irrelevant background noise.
• By filtering out unchanging stimuli (shifting them to the background of awareness), our cognitive resources are freed up to detect novel changes in the environment, which could indicate threats or rewards.
• Therefore, Reason R is a correct explanation for why and how the sensory systems diminish their responsiveness to prolonged stimulation.
Step 3: Final Answer:
Both Assertion A and Reason R are correct, and Reason R is the correct explanation of Assertion A.
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