A P300 Brain Computer Interface to Operate Power Wheelchair Tilt

Not Applicable

Completed

• Conditions: Amyotrophic Lateral Sclerosis; Healthy
• Interventions: Device: Using a BCI to control wheelchair tilt

• Registration Number: NCT01123148
• Lead Sponsor: University of Michigan

Brief Summary

The investigators want to develop a brain-computer interface (BCI) that will eventually allow people who are completely paralyzed to independently control the tilt feature on their power wheelchairs. This study will allow healthy volunteers to test the feasibility and accuracy of controlling a BCI using only their brain signals while seated in a tilting wheelchair.

Detailed Description

Not available

Study Timeline

• Study Start: 2010-01
• Study First Submitted: 2010-05-04
• Study First Submitted QC: 2010-05-11
• Study First Posted: 2010-05-14
• Primary Completion: 2010-08
• Study Completion: 2010-08
• Results First Submitted: 2016-03-04
• Status Verified: 2016-06
• Results First Submitted QC: 2016-06-20
• Last Update Submitted: 2016-06-20
• Results First Posted: 2016-08-01
• Last Update Posted: 2016-08-01

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 16

Inclusion Criteria

• Age 18 or older.
• Able to read text on a computer screen
• Able to understand and remember instructions concerning participation.

Exclusion Criteria

• Unable give informed consent.
• Unable to understand and follow instructions.
• Have abnormal tone or uncontrolled movements in the head-and-neck that would interfere with EEG recordings.
• Known to have photosensitive epilepsy.
• Open head lesions or sores.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Tilt testing	Using a BCI to control wheelchair tilt	-

Primary Outcome Measures

Name	Time	Method
The Accuracy of BCI Typing While Tilting in a Power Wheelchair and While Sitting Still in a Power Wheelchair.	3 1-2 hour sessions over 2-4 weeks	Subjects will participate in 3 sessions. During each session each subject will copy a "word" in each of 3 conditions (no-movement, self-movement, continuous movement) by typing using only brainwaves. For the no-movement condition, the wheelchair seat remains in a fixed position. For the self-movement condition, the angle of the wheelchair seat changes in response to some of the selections made with the brain-computer interface. For the continuous movement condition, the angle of the wheelchair seat moves continuously. Changes in the wheelchair's position may affect spelling accuracy. The accuracy of the subject's copy spelling of the designated word will be measured for each condition in each session. The order of the conditions is balanced across the three days. The accuracy for each subject in each condition is presented as the average of the accuracies for that condition across the three days.