Question at position 12 For most people, the left hemisphere controls which of these?SpeechHearingEmotionVision

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BlackTom AI · Accepted Answer

To tackle this question, I’ll compare each option against what is largely established about lateralization in the brain.
Option 1: Speech. This is the correct choice for most people. Language functions, including speech production and language processing, are predominantly localized in the left hemisphere (Broca’s area for production and Wernicke’s area for comprehension in most individuals). This aligns with common neuropsychology findings about hemispheric specialization.
Option 2: Hearing. While auditory processing involves both hemispheres in a concerted way, it is not exclusively or predominantly controlled by the left hemisphere. The auditory pathways project to both temporal lobes, so neither hemisphere alone is said to control hearing for most people.
Option 3: Emotion. Emotional processing tends to be more strongly associated with the right hemisphere for many individuals, especially in regard to processing prosody, affect, and certain nonverbal emotional cues. Although there is bilateral involvement, emotion is not primarily controlled by the left hemisphere.
Option 4: Vision. Vision is largely processed contralaterally at the level of the primary visual cortex—the left hemisphere processes the right visual field and the right hemisphere processes the left visual field. This means vision is not controlled by the left hemisphere alone in a general sense, though higher-level processing involves both sides. Therefore, describing left hemisphere control of vision as a general rule is inaccurate.
In summary, among the options, speech best fits the well-established pattern of left-hemisphere dominance for language functions in most people, while the other options reflect substantial bilateral involvement or right-hemisphere specialization for emotion, or contralateral processing for vision and hearing.

Question at position 12 For most people, the left hemisphere controls which of these?SpeechHearingEmotionVision

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