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Acta Biomedica Scientia

Volume 13, Issue 1, 2026
Mcmed International
Acta Biomedica Scientia
Issn
2348 - 215X (Print), 2348 - 2168 (Online)
Frequency
bi-annual
Email
editorabs@mcmed.us
Journal Home page
http://mcmed.us/journal/abs
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Abstract
Title
DEVELOPMENT OF AN AUTOMATED VIDEO-TRACKED MOTORIZED COMMUTATOR SYSTEM FOR UNRESTRICTED NEURAL RECORDING IN FREELY MOVING RODENTS
Author
Dr. Ganga Devi T.P, Dr. SravaniE, Blessy V
Email
keyword
Motorized commutator,Video tracking, Head direction, Tether twist compensation, Behavioral neurophysiology
Abstract
Recording neuronal signals from moving and free animals lets us investigate how the brain controls our behavior, but usually requires connecting the test subjects to a device that gathers the data. It is desirable that animals can walk or complete actions the way they would in nature. At present, several research groups in cognitive and behavioral neuroscience rely on motorized commutator systems available on the market to sense the rotations created by moving animals in their tethers. We describe a new kind of motorized commutator that is directed through automatic tracking via a video camera. Head orientation was measured by using two light-emitting diodes and the lighting setup was improved to reduce video noise. The system measures rotational movements of the animal by examining the orientation of its head during testing. The control software sets the angle of the motor and, once set, applies signals to unwind the tether. The configuration helps avoid twists in the flying leads during animal experiments where neural activity is recorded. As far as we understand, this is the first system to identify tether twisting and rotate the commutator using information extracted from video of the head. We provide an affordable and easy-to-use method for enhancing behavioral neurophysiology studies in small rodents using automated commutator control
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