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Completed

NCT Number: NCT02610647

Functional Significance of Complexity Measures in the Sensory-motor Behavior

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.

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Key information

Conditions

Healthy Volunteers

Age range

18 year–45 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

CHU de Montpellier - Hôpital Lapeyronie, Montpellier, France

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About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • The patient must have given his/her informed and signed consent
  • The patient must be insured or beneficiary of a health insurance plan
  • The subject does not practice music intensively (<1h / day on average)

Exclusion criteria

  • The patient is participating in another study
  • The patient is in an exclusion period determined by a previous study
  • The patient is under judicial protection, or under guardianship
  • The patient refuses to sign the consent
  • It is impossible to correctly inform the patient
  • The patient is pregnant, parturient, or breastfeeding
  • The subject regularly practices music
  • The subject is suffering from a neurodegenerative disease of the central or peripheral nervous system which may affect the sensorimotor control of rhythmic movements of the upper limb
  • The subject has had a recent trauma of the upper limb
  • The subject is suffering from uncorrected visual and hearing impairment

Treatment and study plan

Wrist anesthesia

Drug

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.

Blinding mask

Other

Patients will don a mask that prevents them from seeing during the tapping test.

Anti-noise helmet

Other

Patients will don a helmet that prevents them from hearing during the tapping test.

Tapping test

Other

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.

Primary outcomes

  1. minmaxMF-DFA value during the tapping test

    Time frame: Day 0

    The level of complexity of the estimated sensorimotor performance as measured by the multi-fractal exponents.

Secondary outcomes

  1. Coefficient of variation

    Time frame: Day 0

  2. αDFA value during the tapping test

    Time frame: Day 0

    The level of complexity of the estimated sensorimotor performance as measured by the single-fractal exponent.

Sponsors and collaborators

Lead sponsor

Centre Hospitalier Universitaire de Nīmes

Other

Registry information

Official study title

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

Acronym: NEURO COMP

Important dates

Study start
2017
Primary completion
2017
Study completion
2017
First posted
Nov 20, 2015
Registry last updated
Nov 19, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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