20s delay middle arm w-maze sham session delay stim 300-500 ms delay stim post ripple 1v 200 ms pulses all diodes working new reward, sucrose solution 30% animal performed 86trials! very motivated around ~80% performance A lot of 60 hz noise from the arduino and the opto power supply, thus the ripple detection is not so good. Optitrack recorded Take 2017-10-12 01.15.42PM