![]() Movements show small trial-to-trial variability despite being unrestrained. We tracked 3D multi-joint arm and head movements using markerless motion capture. Two rhesus monkeys conducted instructed walk-and-reach movements towards targets flexibly positioned in the cage. We present an experimental environment (Reach Cage) and a versatile visuo-haptic interaction system ( MaCaQuE) for investigating goal-directed whole-body movements of unrestrained monkeys. System neuroscience of motor cognition regarding the space beyond immediate reach mandates free, yet experimentally controlled movements.
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