Auditory Sensory Attenuation in Obesity

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

37 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-03-01

Study Completion Date

2025-06-30

Brief Summary

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The goal of this observational cross-sectional study is to test the sensory attenuation effect with auditory stimuli comparing women with obesity and healthy-weight women. Specifically, the study aims to test whether the sensory attenuation effect (i.e., the perceived loudness of a self-generated sound is weaker than when another person produces the same sound):

i) is observed in obesity ii) it can be modulated in interactive action contexts, as was previously observed in healthy participants.

Participants will compare the loudness of target sound with a comparison tone, which can be prompt by the participant by pressing a button on their own will (i.e., individual context) or upon the experimenter\'s signal (i.e., interactive context); externally-generated sounds are produced in the opposite way.

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Detailed Description

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The perceived loudness of a self-generated sound is generally weaker than when another person produces the same sound. This effect is known as sensory attenuation, and it is considered a proof of sense of agency (i.e., it relies on the anticipation of the sensory-motor effects of one\'s intentional action). Recently, it was suggested that this effect is enhanced in interactive action contexts in healthy individuals, meaning that sounds are produced as a consequence of cooperation between individuals.

Participants will compare the loudness of target sound with a comparison tone, which could be generated in 4 different conditions:

i) participants press a button ii) the experimenter press the button iii) participants press the button upon the experimenter\'s signal (i.e., who touch the participants\' arm) iv) the experimenter presses the button upon the participants\' signal (i.e., who touch the experimenter\'s arm).

However, it is not clear whether the same effect of cooperation can be observed also when individuals experience difficulties in social interactions and relationships.

To this purpose, the study compared the sensory attenuation effect for auditory stimuli in a traditional (i.e., individual) and interactive context, comparing women with obesity and healthy-weight women.

Indeed, relational difficulties and social withdrawal characterized this clinical condition.

Conditions

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Obesity

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Obesity

BMI \> 30 kg/m2

No interventions assigned to this group

Healthy weight

BMI range: 19 - 29 kg/m2

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* BMI \> 30 kg/m2 (controls)
* handedness: right

Exclusion Criteria

* history of eating disorders (controls)
* major psychiatric conditions (e.g., psychosis, personality disorders)
* developmental disorders (e.g., autism spectrum disorders)
* neurological or brain injuries disorders
* motor impairments

Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes