Acarbose solution will be swabbed on the tip of the tongue to inhibit salivary alpha amylase activity; each swab will contain ~484 microgram acarbose; total maximum exposure of each subject to acarbose will be ~14-30 mg each session (1-20 sessions)

Acarbose solution will be swabbed on the tip of the tongue to inhibit salivary alpha amylase activity; each swab will contain ~484 microgram acarbose; total maximum exposure of each subject to acarbose will be ~14-30 mg each session (1-20 sessions)

There is only one outcome measure, that is the detection of glucose polymers. Subjects will be asked to discriminate a target sample (glucose polymers). Three samples will be applied using cotton swabs on the subjects' tongue (one at a time): 2 blanks (water + acarbose) and 1 target stimuli (glucose polymer solution + acarbose). Subjects will be asked to identify the target sample. The number of subjects who correctly identify the target stimuli will be counted and will be statistically analyzed to determine whether glucose polymer can be detected without the confounding effect of salivary alpha amylase hydrolysis.