The Sensory Attenuation Paradigm in Auditory Modality in Obesity
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 37
- 试验地点
- 1
- 主要终点
- point of subjective equality (PSE)
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •BMI > 30 kg/m2 (controls)
- •handedness: right
排除标准
- •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
结局指标
主要结局
point of subjective equality (PSE)
时间窗: day 1
individual PSE in each experimental condition is obtained by fitting observed judgements of loudness, relative to seven possible comparison tones. The PSE represents the tone loudness that participants perceive as loud as the target sound (i.e., the sound intensity which records only 50% of correct judgments "which sounds was louder?")
次要结局
- cognitive empathy(day 1)
- interpersonal pleasure(day 1)