Neural Correlates of Sensory Specific Satiety

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

30 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-02-01

Study Completion Date

2023-10-01

Brief Summary

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Sensory specific satiety, or the phenomenon that the pleasantness of a particular taste declines when certain types food are consumed to satiety, plays an important role in food choice and meal termination.The rewarding effect of sugar will be investigated in a group of 30 healthy participants with a body mass index ranging from 17.5 to 35kg/m2. A gustatory stimulation paradigm designed to induce sensory specific satiety for glucose will be employed. The aim is to assess neuronal stimulus processing in relation to the sensory satiety level and to investigate the relationship with everyday eating behavior.

Detailed Description

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Sensory specific satiety, or the phenomenon that the pleasantness of a particular taste declines when certain types food are consumed to satiety, plays an important role in food choice and meal termination. Since changes in taste, smell and appetite are commonly observed in obesity, previous studies investigated the relation of sensory specific satiety to weight gain, but observed conflicting results. To gain a more detailed understanding of the relationship between sensory specific satiety and weight homeostasis, we will examine the rewarding effect of sugar in a group of 30 healthy participants with a body mass index ranging from 17.5 to 35kg/m2. We will employ a gustatory stimulation paradigm designed to induce sensory specific satiety for glucose. During fMRI scanning, glucose and water are applied orally using a gustometer. Furthermore, relevant hormonal satiety parameters are measured, as well as dietary behavior and food preferences in everyday life. This will allow us to assess neuronal stimulus processing in relation to the sensory satiety level and to investigate the relationship with everyday eating behavior. A better understanding of factors contributing to the development and maintenance of overweight are crucial for the development of new treatment options for obesity.

Conditions

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Satiety Response Functional Neuroimaging Obesity

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Healty Participants with varying BMI

30 healthy participants with a body mass index ranging from 17.5 to 35kg/m2.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

1. BMI between 17,5 and 35 kg/m².
2. Over age of 18 years.
3. Right-handedness.
4. Normal or corrected-to-normal vision.
5. Capacity to consent.

Exclusion Criteria

1. History of head injury or surgery.
2. History of neurological disorder.
3. Severe psychiatric comorbidity.
4. Lifetime or current medical illness that could potentially affect appetite or weight (including eating disorders diagnosis)
5. Smoking.
6. Current psychotropic medication.
7. Inability to undergo fMRI scan (e.g. metallic implants, claustrophobia, pacemakers).
8. Pregnancy.

Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Responsible Party

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Joe Simon

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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joe simon, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Heidelberg University

Locations

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University Hospital Heidelberg

Heidelberg, , Germany

Site Status

Countries

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Germany

Other Identifiers

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S-656/2019-2

Identifier Type: -

Identifier Source: org_study_id