Ignite Creation Date:
2025-12-25 @ 4:16 AM
Ignite Modification Date:
2025-12-26 @ 3:17 AM
Study NCT ID:
NCT07290920
Status:
COMPLETED
Last Update Posted:
2025-12-18
First Post:
2025-12-04
Is NOT Gene Therapy:
False
Has Adverse Events:
False
Brief Title:
Sensorimotor Integration in Patients With Tourette Syndrome
Sponsor:
I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio
Organization:
Study Overview
Official Title:
Sensorimotor Integration in Patients With Tourette Syndrome: an Observational Study.
Status:
COMPLETED
Status Verified Date:
2025-12
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
ISM
Brief Summary:
The present study investigates the mechanisms underlying the sense of agency in patients with Tourette Syndrome (TS). Previous research has shown that individuals with TS display impairments in both explicit and implicit aspects of agency, possibly due to altered integration between sensory feedback and motor predictions. To explore this hypothesis, the study will examine the phenomenon of sensory attenuation, a marker of sensorimotor integration that has not yet been investigated in this population. Furthermore, the study will assess how alterations in sensorimotor integration are related to the severity of TS symptoms.
Detailed Description:
The present study aims to investigate the mechanisms underlying the sense of agency in patients with Tourette Syndrome (TS). Previous evidence indicates that individuals with TS exhibit abnormalities in both explicit and implicit (absent intentional binding) experiences of agency. According to a recent theoretical framework, such alterations may stem from impaired sensorimotor integration - specifically, a dysfunction in the ability to combine sensory feedback with motor predictions about the consequences of one's own actions. This deficit may not only affect motor control but also the awareness of self-generated movements, thereby compromising the distinction between self-produced and externally produced actions.
To test this hypothesis, the study will employ the Force Matching Task (FMT), a well-established paradigm used to assess sensory attenuation - the reduced perception of intensity for self-generated sensations compared to externally generated ones. In this task, participants are asked to reproduce a force applied to their finger either by pressing directly with their own finger (self-generated condition) or by controlling a mechanical device (externally generated condition). In healthy individuals, self-generated forces are typically perceived as weaker due to predictive motor mechanisms. A reduced or absent sensory attenuation effect would indicate altered sensorimotor integration.
The primary aim of the study is therefore to evaluate whether patients with Tourette Syndrome show atypical sensory attenuation compared to healthy controls, as an index of altered sensorimotor integration underlying the sense of agency. The secondary aim is to examine the relationship between the degree of sensory attenuation and clinical symptom severity, to determine whether deficits in sensorimotor integration are associated with the intensity of tic expression or other clinical features of the disorder.
To test this hypothesis, the study will employ the Force Matching Task (FMT), a well-established paradigm used to assess sensory attenuation - the reduced perception of intensity for self-generated sensations compared to externally generated ones. In this task, participants are asked to reproduce a force applied to their finger either by pressing directly with their own finger (self-generated condition) or by controlling a mechanical device (externally generated condition). In healthy individuals, self-generated forces are typically perceived as weaker due to predictive motor mechanisms. A reduced or absent sensory attenuation effect would indicate altered sensorimotor integration.
The primary aim of the study is therefore to evaluate whether patients with Tourette Syndrome show atypical sensory attenuation compared to healthy controls, as an index of altered sensorimotor integration underlying the sense of agency. The secondary aim is to examine the relationship between the degree of sensory attenuation and clinical symptom severity, to determine whether deficits in sensorimotor integration are associated with the intensity of tic expression or other clinical features of the disorder.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: