CBIS Assessment and Diagnosis 5

Question 1

Which structure is most commonly damaged in a coup-contrecoup injury involving a blow to the back of the head (occiput)?

Accepted Answer

Frontal and temporal poles at the contrecoup site

Answer

A blow to the occiput commonly produces contrecoup damage to the frontal and temporal poles, which are particularly vulnerable due to irregular skull surfaces.

Question 2

When a TBI patient has a normal CT scan but reports persistent headaches, cognitive difficulties, and sleep disturbance, the CBIS should suspect:

Accepted Answer

Mild TBI with physiological disruption not visible on CT

Answer

Mild TBI commonly produces no CT abnormalities yet causes real physiological disruption detectable by MRI, neuropsychological testing, and symptom inventories.

Question 3

The 'N-back task' used in neuropsychological assessment primarily measures which cognitive domain?

Accepted Answer

Working memory and sustained attention

Answer

The N-back task requires continuously updating mental representations of stimuli, directly assessing working memory and sustained attention capacity.

Question 4

A CBIS professional observes that a patient's behavior changes significantly depending on the environment and the assessor. This variability is MOST likely attributable to:

Accepted Answer

Neurological inconsistency consistent with TBI-related fatigue and context sensitivity

Answer

TBI patients commonly show performance variability due to fatigue, overstimulation, and context sensitivity, which reflects genuine neurological dysfunction.

Question 5

Which of the following is the PRIMARY purpose of the Comprehensive Trail Making Test (CTMT) in TBI assessment?

Accepted Answer

Evaluating executive function, attention, and processing speed

Answer

The CTMT assesses executive function, visual search, mental flexibility, and processing speed by requiring patients to connect numbered or mixed sequences.

(CBIS) Certified Brain Injury Specialist Practice Test

(CBIS) Certified Brain Injury Specialist Practice Test

CBIS Assessment and Diagnosis 5