A tool towards EEG semi-autonomous electrode placement

TL;DR

This paper introduces a low-cost, compact EEG electrode placement tool using a 9 dof IMU to assist health professionals in accurately following the 10-20 system, improving precision and efficiency.

Contribution

It presents a novel, affordable medical device that leverages IMU sensors and visualization software to enhance electrode placement accuracy in EEG exams.

Findings

Preliminary results confirm the device's validity.

The system improves placement precision compared to manual methods.

The device is more affordable and compact than existing solutions.

Abstract

The paper proposes a novel medical device based on a 9 dof IMU to help health professionals performing more precisely the electrode placement task in EEG exams. The tool precisely tells the operator if the 10-20 electrode placement system is being correctly followed. The manual task is of major importance and time consuming, because all the electrodes must be correctly and very precisely placed in the head of the patient. The gold standard process is manual, and although several medical devices (developed to other types of medical procedures) can be applied to increase the precision of the electrode placement, they are still very expensive. The proposed medical device, based only on the sensors of a 9 dof IMU, and the processing capabilities of a microprocessor, diminish the price of the device. Moreover, the size of the apparatus is also diminished, when compared with infrared vision based systems. The developed system includes a visualization subsystem that visualises the position of the electrodes in a virtual head of the patient, using a specific tool, 3DSlicer, to receive and visualise the 3D pose of the medical device when point to the patient head. Preliminary results showed the validity of the proposed device.