During an FMRI Study Conducted by Haxby Et Al

question 39

Multiple Choice

During an fMRI study conducted by Haxby et al. (2001) , people were shown photographs of seven different categories of objects (faces, houses, chairs, bottles, shoes, scissors, and cats) , as well as photographs of scrambled images. The researchers found that, by analyzing the spatial distribution of cortical activity within a large swath of the IT cortex, they could:

• A) perceive regions with convex borders as grounds.
• B) predict the object category being viewed with 95 percent accuracy.
• C) determine the location, orientation, and curvature of edges in the retinal image of objects.
• D) perceive two edges that would meet if extended as a single edge that has been partially occluded.

---

Definitions:

Analysis of Variance

A statistical method used to test the differences between two or more means by analyzing variance.

Matched Pairs

refers to a design in experiments where each case has a unique counterpart for comparison, minimizing variability.

Interval

A range of numbers between two set points, often used in mathematics and statistics to specify subsets of the real number line.

Chi-Squared Distribution

A distribution that represents the distribution of the sum of the squares of k independent standard normal random variables.