Most tasks used to study sensory-motor processing allow motor plans to be programmed during the sensory epoch of the task. We studied neurons in frontal cortex in a task designed to isolate sensory decisions from movement planning (the Loose Stimulus-Response Association (LSRA) task, Horwitz and Newsome, SfN 1999.) Monkeys viewed a field of dots moving in one of two directions, then reported the direction of motion with a saccade to one of two targets, which appeared later in the trial following a brief delay. The targets appeared at randomly chosen positions, eliminating any consistent relationship between motion direction and saccade direction. During the delay, therefore, monkeys must maintain a decision about the motion direction but cannot develop a reliable saccade plan. Using this task, Horwitz and Newsome found that 10% of neurons in the deeper superior colliculus (SC) were selectively activated in relation to the monkey's decision, although the activity was weaker during the presentation of the st...