Home > Psychology MCQ Questions and Answers > Under which condition is aspiration considered the preferred technique for creating a lesion?
Under which condition is aspiration considered the preferred technique for creating a lesion?
A
in a deeper brain area
B
in an area of cerebral cortex
C
and irreversible lesion
D
in underlying white matter
Correct Answer:
B
in an area of cerebral cortex
- Aspiration lesions involve physically removing brain tissue using a suction pipette or cannula.
- Preferred location: superficial cortical areas due to easy accessibility and visibility.
- Rationale for cortex use:
- Allows precise removal of gray matter without extensive damage to underlying structures.
- Minimizes risk of injuring deep white matter tracts.
- Not ideal for deep brain regions:
- Reaching subcortical nuclei requires traversing healthy tissue, increasing collateral damage.
- Alternatives like electrolytic or excitotoxic lesions are safer for deep targets.
- Advantages of aspiration in cortex:
- Immediate lesion confirmation visually.
- Can selectively target layers of cortex.
- Limitations:
- Irreversible; not suitable where tissue sparing is critical.
- Risk of bleeding or infection if improperly performed.