CT and Structural MRI Studies of the Brains of Patients

question 122

Multiple Choice

CT and structural MRI studies of the brains of patients with language-related disorders have found that

• A) lesions restricted to Broca's area produce Broca's aphasia in most patients.
• B) lesions restricted to Wernicke's area produce Wernicke's aphasia in most patients.
• C) large anterior lesions are more likely to produce deficits in language reception than are large posterior lesions.
• D) both A and B
• E) none of the above

---

Definitions:

Chi-Squared Distribution

A statistical distribution that is used to describe the distribution of a sum of the squares of k independent standard normal random variables.

Degrees of Freedom

In statistical analysis, the number of independent values or quantities that can vary in the calculation of a statistic, used in assessing the significance of the statistic.

Friedman Test

A non-parametric statistical method for identifying treatment differences across several trials.

Sign Test

An assessment method without parametric assumptions, designed to check for differences in the median of matched data points.