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Scenario II
In pioneering research by Sperry and colleagues,split-brain patients were asked to stare at a dot on a screen centered between their eyes while words of common objects were projected onto the screen either in their left or right visual fields.Subsequently,patients were asked to reach behind a screen with either their left or right hands and identify the object amongst other common objects by touch alone.
-(Scenario II)Using the procedure described in the scenario,split-brain patients were simultaneously shown the word "key" in the left visual field and the word "chain" in the right visual field.They were then asked what word was projected onto the screen.Patients will respond that they saw the word:
A)key.
B)chain.
C)key chain.
D)chain key.

Question

Use the following to answer questions 
Scenario II
In pioneering research by Sperry and colleagues,split-brain patients were asked to stare at a dot on a screen centered between their eyes while words of common objects were projected onto the screen either in their left or right visual fields.Subsequently,patients were asked to reach behind a screen with either their left or right hands and identify the object amongst other common objects by touch alone.
-(Scenario II)Using the procedure described in the scenario,split-brain patients were simultaneously shown the word "key" in the left visual field and the word "chain" in the right visual field.They were then asked what word was projected onto the screen.Patients will respond that they saw the word:
A)key.
B)chain.
C)key chain.
D)chain key.

Quizplus · Accepted Answer

Because the word "key" was presented in the left visual field and the split-brain patients have their left hemisphere, which controls the right hand, it means that the patients' left hand will point to only the word "key." Therefore, the patients will verbally report that they saw the word "chain" since they cannot verbally name the word "key" because the left hemisphere is responsible for language. Hence, the patients will only be able to point to "key" with their left hand and say "chain" because the right visual field is processed by the left hemisphere, which cannot verbally report what it saw. Thus, the correct answer is B.

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