NCT02610647

Functional Significance of Complexity Measures in the Sensory-motor Behavior

Functional Significance of Complexity Measures in the Sensory-motor Behavior: Are There Potential Clinical Applications?

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 60 (actual)
• Sponsor: Centre Hospitalier Universitaire de Nīmes · Academic / Other
• Sex: All
• Age: 18 Years – 45 Years
• Healthy volunteers: Accepted

Summary

The main objective of this study is to compare between groups the level of complexity of the estimated sensorimotor performance through multi-fractal (minmaxMF-DFA) exponents.

Detailed description

The secondary objectives of this study are to compare the level of complexity of the estimated sensorimotor performance using the(A) mono-fractal exhibitors (the αDFA values) and the (B) coefficient of variation (CV) between groups.

Conditions

• Healthy Volunteers

Interventions

Type	Name	Description
DRUG	Wrist anesthesia	Prior to the tapping test, regional anesthesia is performed in the form of sensory blocks distal to the wrist: injection of ropivacaine 7.5mg / ml is carried out successively in contact with three nerves (ulnar, median and radial) with a volume of 2 ml for nerve, for a total of 45mg.
OTHER	Blinding mask	Patients will don a mask that prevents them from seeing during the tapping test.
OTHER	Anti-noise helmet	Patients will don a helmet that prevents them from hearing during the tapping test.
OTHER	Tapping test	Subjects will be placed at a table in a sitting position where they will perform a rhythmic finger tapping test. The seat height is adjusted so that the front dominant arm rests comfortably on the table. Subjects will be equipped with headphones to receive auditory signals during a first synchronized phase of tapping. After the last auditory signal, participants will continue the tapping task by themselves as directed: "after the metronome stops,continue tapping the prescribed tempo as accurately and consistently as possible throughout the test." The movements of the index finger will be measured by a single-axis accelerometer (15 × 15 mm) attached to the nail.

Timeline

• Start date: 2017-06-06
• Primary completion: 2017-08-31
• Completion: 2017-08-31
• First posted: 2015-11-20
• Last updated: 2025-11-19

Locations

3 sites across 1 country: France