Repeated Food Exposure Via the Olfactory and Gustatory Systems
Completed · Not applicable
Conditions studied: Habituation
In brief
Increasing exposure to a single orosensory cue without ingestion of additional energy may promote an increased rate of habituation, more rapid satiation, and reduced intake. This exposure can occur via smell (olfactory) and taste (gustatory) systems.It is not clear if repeated exposure via the combined olfactory and gustatory systems increases the rate of habituation more so than repeated exposure through one of these systems. Thus, the purpose of this investigation is to examine the amount of salivation occurring in 12 trials of exposure to a food via the olfactory, gustatory, and combined olfactory and gustatory systems. The primary dependent variable will be the amount of salivation in the 12 trials. It is hypothesized that a more rapid decrease in salivation will occur across trials in the combined olfactory and gustatory exposure as compared to the other two conditions, indicating a more rapid rate of habituation.
Key facts
- Study ID
- NCT01651221
- Run by
- The University of Tennessee, Knoxville
- People needed
- 27
- Starts
- 2012-07-01
- Expected to finish
- 2015-12-01
- Last updated by the study team
- 2018-04-05
Who can join
Age: 18 and older, up to 30. Sex: female. Healthy volunteers: accepted.
You may qualify if…
- Dietary restraint scores of less than or equal to 12 on the Three Factor -
- Eating Questionnaire-Cognitive Restraint scale.
- Have a body mass index (BMI) between 18.5 and 24.9.
You may not qualify if…
- Are taking medications or having an illness which might influence salivation, smell, and taste (i.e. upper respiratory illness, methylphenidate, atropine, Benadryl, Elavil, etc)
- Are currently dieting
- Are a binge eater
- Do not at least moderately like lemon or lime flavor scoring < 50 on a 100 mm visual analogue scale
- Are a regular smoker
- Have any dietary restrictions that will inhibit participation including food allergies
Where it is running
- Healthy Eating and Activity Lab, University of Tennessee — Knoxville, Tennessee, United States
Full record on ClinicalTrials.gov
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