Sensorimotor Based Brain Computer Interface

Effect of Normalizer Adaptation on Accuracy in a Sensorimotor Based Brain-Computer Interface

Status

Terminated

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02169375

Enrollment

Registered

2014-06-23

Start date

2010-11-30

Completion date

2011-06-30

Last updated

2014-06-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteers

Brief summary

Sensorimotor (also know as mu) rhythm based brain-computer interfaces (BCIs) are a tool for controlling electronic devices using only brain signals. Often, the computer software that analyzes mu-rhythm brain signals constantly adapts to the individual user's brain signals when the training target location is known. The investigators want the BCIs to be more universal, and not depend on knowing the target location. Therefore, the investigators will test the effect removing adaptation has on accuracy of using a mu-rhythm BCI.

Interventions

OTHERBrain computer Interface Mu (SMR) rhythm

Subjects will wear an EEG cap for 1-2 hours typical per session and use the brain computer interface to operate assistive technology. Subjects will be asked to participate in 10 sessions.

Study design

Allocation

RANDOMIZED

Intervention model

SINGLE_GROUP

Primary purpose

BASIC_SCIENCE

Masking

TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

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.

Design outcomes

Primary

Measure	Time frame	Description
Accuracy of a mu rhythm BCI using adaptation versus no adaptation.	10 times over 5 weeks	Accuracy with which subjects can select one of two targets after a 3-second time period. The accuracy for a run is calculated as the % of the trials in which the correct target is selected. The average accuracy will be calculated for each of the 10 usage sessions and changes over the sessions will be tracked.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026