ABCN ABCN Brain-Behavior Relationships and Neuroanatomy 2

Question 1

Which primary neurotransmitter system is most critically disrupted in Parkinson's disease, producing motor and cognitive symptoms?

Accepted Answer

Dopaminergic system (nigrostriatal pathway)

Answer

Parkinson's disease is characterized by degeneration of dopaminergic neurons in the substantia nigra pars compacta, depleting dopamine in the striatum.

Question 2

A clinical neuropsychologist assesses a patient with traumatic brain injury who shows preserved procedural learning but severely impaired episodic memory. This dissociation suggests primary damage to the:

Accepted Answer

Medial temporal lobe with sparing of the basal ganglia

Answer

Episodic memory depends on the medial temporal lobe (hippocampus), while procedural learning relies on the basal ganglia and cerebellum, so this pattern indicates selective medial temporal damage.

Question 3

Which term describes the neuropsychological phenomenon where a patient lacks awareness of their own cognitive or neurological deficits?

Accepted Answer

Anosognosia

Answer

Anosognosia is the unawareness or denial of one's own illness or deficit and is most commonly associated with right hemisphere damage.

Question 4

In the context of ABCN neuropsychology, which brain region is most implicated in the consolidation and retrieval of semantic memory?

Accepted Answer

Temporal neocortex and lateral temporal lobes

Answer

Semantic memory is distributed across the temporal neocortex and lateral temporal lobes, distinct from the hippocampal dependence of episodic memory.

Question 5

Transcortical motor aphasia differs from Broca's aphasia primarily in that patients with transcortical motor aphasia:

Accepted Answer

Have preserved repetition despite reduced spontaneous speech output

Answer

Transcortical motor aphasia is characterized by preserved repetition (the arcuate fasciculus is intact) with reduced spontaneous verbal output, differentiating it from Broca's aphasia.

(ABCN) American Board of Clinical Neuropsychology Practice Test

(ABCN) American Board of Clinical Neuropsychology Practice Test

ABCN ABCN Brain-Behavior Relationships and Neuroanatomy 2