FAQ/Cable tangling
From Miniscope
The coaxial cable keeps tangling during behavior. How do I fix it?
Use a commutator. The two most recommended options are: 1) OEPS torque-free coaxial commutator: uses the V4's onboard head orientation sensor to actively de-rotate the cable. We have had great experience using it and have also heard very positive reviews from the community. Requires Bonsai (with Jon Newman's Miniscope plugin) to control the Miniscope, because the commutator and Miniscope DAQ software cannot both own the USB data stream at the same time. 2) LabMaker open-MAC commutator is s a low-torque, Motorized All-in-one Commutator. It operates in torque-based mode with minimal audible noise due to its dual magnetic Hall sensors. The system accommodates 128-256 recording channels for electrophysiology and miniature endoscope (miniscope) / optogenetics applications. Passive commutators from DragonFly and Neurotek have also been used. Some older passive designs make image striping artifacts more frequent.