11. Hemispatial neglect is most commonly caused by damage to the:

A. Left frontal lobe
B. Right parietal lobe
C. Left temporal lobe
D. Right frontal lobe

Question

11. Hemispatial neglect is most commonly caused by damage to the:

A. Left frontal lobe
B. Right parietal lobe
C. Left temporal lobe
D. Right frontal lobe

BlackTom AI · Accepted Answer

Question restatement: Hemispatial neglect is most commonly caused by damage to which brain region?
Options:
A. Left frontal lobe
B. Right parietal lobe
C. Left temporal lobe
D. Right frontal lobe

Now, evaluate each option one by one with explanations:
Option A: Left frontal lobe
- Why this is not the most common cause: While the left frontal lobe can be involved in various cognitive and motor functions, hemispatial neglect is characteristically associated with damage to the right hemisphere, particularly the parietal region. Left frontal damage does not typically produce the classic neglect of the contralateral (left) space seen in most patients.
- Misconception addressed: Someone might think neglect could arise from any frontal injury, but neglect has a strong hemispheric bias toward the right hemisphere due to its specialized attention networks.

Option B: Right parietal lobe
- Why this is correct: Hemispatial neglect most commonly results from damage to the right parietal lobe because this region is crucial for spatial attention and awareness of both sides of space, with a dominant role in attending to the left side. When damaged, patients neglect or ignore stimuli on the left side, even though they may be fully conscious otherwise.
- Supporting concept: The right parietal cortex participates in the dorsal attention network and spatial representation; impairment disrupts awareness of contralateral space, producing the classic neglect syndrome.

Option C: Left temporal lobe
- Why this is not correct: The left temporal lobe is more involved in language and memory processes, not the primary network for spatial attention. Damage here does not typically produce hemispatial neglect, which is a spatial attention deficit rather than a language/semantic deficit.
- Misconception addressed: Confusing memory or language-dominant regions with spatial attention networks can lead to incorrect associations with neglect.

Option D: Right frontal lobe
- Why this is not the most common answer: Although frontal regions contribute to attentional control and executive functions, neglect is most classically linked to the parietal cortex. Right frontal damage can contribute to attentional problems, but the hallmark hemispatial neglect is most strongly tied to the right parietal lesion.
- Important nuance: There can be overlap and overlap-based etiologies in real patients, but for the classic exam-style question, the right parietal lobe remains the strongest and most common cause of hemispatial neglect.

Summary perspective: Among the four options, the right parietal lobe stands out as the region most consistently associated with hemispatial neglect, reflecting the specialized role of the right parietal cortex in distributing attention across both sides of space and in encoding spatial awareness for the contralateral (left) side. The other options describe brain regions involved in related cognitive functions but not the primary cause of classic hemispatial neglect.

202570_PSYC3_73232 Final Exam: Part ONE A Multiple Choice (Remotely Proctored)

11. Hemispatial neglect is most commonly caused by damage to the: A. Left frontal lobe B. Right parietal lobe C. Left temporal lobe D. Right frontal lobe

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