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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04188626
Other study ID # XP THSE BDX SNPSY
Secondary ID ID-RCB (ANSM num
Status Completed
Phase N/A
First received
Last updated
Start date December 9, 2019
Est. completion date August 6, 2020

Study information

Verified date September 2020
Source PSA Automobiles S.A.
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

At level 3 conditionally automated, the vehicle ensures driving and the driver disengages from driving to perform another activity independent of driving (ex: read a book, play on his phone ....). However, drivers are expected to be available to take over control for the case of system failure or limitation. This take-over control must take place in a limited time, very short, of the order of a few seconds. To take-over control of the vehicle quickly and efficiently, the driver must be, at the time of take-over, vigilant, efficient, and attentive to the environment and focused on the take-over of manual driving. Predicting the driver's reengagement capabilities to ensure that the driver will be able to take-over control of the vehicle is crucial at level 3 of autonomous driving.

The objective of ANTIDOTE is to determine physiological and behavioural parameters capable of predicting the take-over quality in level 3 conditionally automated vehicles in a simulated highway driving situation in healthy drivers or drivers with attention disorders.


Description:

At level 3 conditionally automated, the vehicle ensures driving and the driver disengages from driving to perform non-related driving tasks (ex: read a book, play on his phone ....). However, drivers are expected to be available to take over control for the case of system failure or limitation. This take-over control must take place in a limited time, very short, of the order of a few seconds. To take-over control of the vehicle quickly and efficiently, the driver must be, at the time of take-over, vigilant, efficient, and attentive to the environment and focused on the take-over of manual driving. Predicting the driver's reengagement capabilities to ensure that the driver will be able to take-over control of the vehicle is crucial at level 3 of autonomous driving.

In this context, the objective of ANTIDOTE is to determine physiological and behavioural parameters capable of predicting the take-over quality in level 3 conditionally automated vehicles in a simulated highway driving situation.

This study will examine how engagement will impact take-over control quality in 6 non-driving related secondary tasks. A driving simulator study will be conducted and data from a total of 32 healthy drivers and 16 drivers with attention disorders will be used to evaluate take-over quality.

Electrophysiological (EEG, ECG, EDA, EMG, respiration) and behavioral data will be recorded before, during and after the take-over control.


Recruitment information / eligibility

Status Completed
Enrollment 32
Est. completion date August 6, 2020
Est. primary completion date August 6, 2020
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 20 Years to 75 Years
Eligibility Inclusion Criteria:

Common inclusion criteria:

- male or female aged between 20 and 75 years old

- BMI between 18 and 27

- Subject size between 1.50 m and 1.95 m

- Without sleep complains (Item of Basic Nordic Sleep Questionnaire = 3)

- Without excessive daytime sleepiness (Epworth score = 11)

- Non-professional drivers

- Subjects with a driver's license for at least one year

- Subjects driving at least 5000 km per year.

- Having normal visual acuity (correction with lenses accepted) and normal color vision

- Affiliated to a national health service

- Having given written informed consent to participate in the trial.

Healthy volunteers specific inclusion criteria:

- SCL90R score < 60 for anxiety and depression subscales

- MMSE = 30

ADHD patients specific inclusion criteria:

- Patients with an ADHD disorder according to DSM 5,

- Patients agreeing to discontinue psychostimulant treatment 48 hours prior to the experimental session,

Exclusion Criteria:

- Severe life-threatening conditions in the short term,

- Unstable endocrine diseases

- Progressive cardiovascular diseases

- Progressive neurological diseases treated or not,

- Addiction to a substance

- Night and shift-workers who has taken a constraints in the last 72 hours,

- Psychotropic medication taking

- Benzodiazepine or Z-drug medication taking

- Cardiotropic medication taking

- Volunteers who need glasses to drive

- Having simulator-sickness during the first practice session

Healthy volunteers specific inclusion criteria:

- Psychiatric co-morbidities: current major depressive episode, current hypomanic or manic episode, psychotic disorders, autism spectrum disorder

- Exceeded consumption of coffee, tea or caffeinated drinks(> 5 cups / day)

- Exceeded consumption of alcohol drinks (> 2 drinks / day during the last 6 months)

ADHD patients specific inclusion criteria:

- Psychiatric co-morbidities: current major depressive episode, current hypomanic or manic episode, psychotic disorders, autism spectrum disorder (except ADHD)

- Exceeded consumption of alcohol drinks(> 3 drinks / day during the last 6 months)

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
Driving simulator sessions
The volunteers will be placed in a driving simulator that will simulate autonomous highway driving. This autonomous driving will be interrupted by take-over requests related to events that disrupt autonomous driving. During autonomous driving, the driver will have to disengage from driving by performing non-related driving tasks. During each non-related driving tasks, a take-over request will be sent. Electrophysiological (EEG, ECG, EDA, EMG, respiration) and behavioural data will be recorded before, during and after the take-over control.

Locations

Country Name City State
France Bordeaux University Hospital Bordeaux

Sponsors (3)

Lead Sponsor Collaborator
PSA Automobiles S.A. University Hospital, Bordeaux, University of Bordeaux

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary Quality of driving take-over behaviour Quality of driving take-over behaviour (Good/bad) will be assessed by collision (collision or driving off the road) and critical encounters (Time To Collision).
Time to collision (TTC) refers to the time required for the vehicle to collide with the stationary obstacle obstructing the driving lane if it continues at its speed at the time it changes to the next lane completely.
Good : no collision AND TTC >= 1.5 secondes Bad : collision or no collision AND TTC < 1.5 secondes
8 secondes after take-over request
Secondary EEG (electroencephalogram) Physiological parameter: EEG will be recorded and Alpha, theta and gamma activity will be analyzed in the waking EEG. during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary ECG (electrocardiogram) Physiological parameter : ECG recordings and heart rate variability based on time and frequency domain will be analyzed. during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary EMG (electromyogram) Physiological parameter : surface EMG will be recorded and Derive Average Rectified, derive Integrated Root and means Square EMG will be analyzed and EMG Frequency & Power Analysis. during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary Electrodermal activity 1 (EDA) Physiological parameter : EDA will be recorded and skin conductance level analyzed. during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary Electrodermal activity 2 (EDA) Physiological parameter : EDA will be recorded and skin conductance response analyzed. during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary Respiration Physiological parameter : Respiratory frequency recorded during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary Physical activity Physiological parameter : Physical activity expressed in count/min during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary Eye tracking Physiological parameter :Eye tracking will be recorded and point of gaze, Perclos, blinks, diameters of pupils analyzed. during the 2 minutes before the take-over request, during take-over control and the 2 minutes after the take-over control
Secondary Subjective driving take-over control quality: Visual analogic scale Visual analogue scale to assess subjective driving take-over control quality (Subjective scale).
The scale ranges from 0 " bad" to 100 "good"
8 secondes after take-over request
Secondary Subjective level of attention and distraction before take-over control request Visual analogue scale to assess subjective level of attention and distraction just before take-over control request The scale ranges from 0 "attentive" to 100 "inattentive" 8 secondes after take-over request
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