Evidence for the Existence of a Descending Pain-Control Circuit Came

question 67

Multiple Choice

Evidence for the existence of a descending pain-control circuit came from the finding that

• A) stimulation of the PAG produces analgesia.
• B) the PAG contains opiate receptors.
• C) some opiates are endogenous.
• D) all of the above
• E) none of the above

---

Definitions:

Regression Analysis

A statistical method used for estimating the relationships among variables, often for predicting a dependent variable from one or more independent variables.

Entering GPA

The grade point average of students at the time they are admitted into an educational institution.

Regression Line

A line through a scatterplot of data points that best expresses the relationship between those points, typically used in linear regression to predict the outcome variable from the predictor variable.

Proficiency Test

An assessment designed to measure an individual's knowledge or competence in a specific area or discipline.