PET scans cannot detect changes in activity that are briefer than about 30 seconds.
Indicate whether the statement is true or false
Question 2
As a blind person learns to read Braille, he or she is relying on discriminations based on shallow responses from:
a. Meissner's corpuscles and Ruffini endings
b. Merkel's disks and Pacinian corpuscles
c. Pacinian corpuscle and Meissner's corpuscle
d. Meissner's corpuscles and Merkel's disks
