Target Selection vs. Response Selection
Target selection refers to the process of selecting a single object from a field of multiple objects as the goal of a movement. It can also be used to refer to the deployment of covert attention to a selected object, even when an overt movement is not ultimately made. For overt actions, target selection specifies the movement goal (or end point), but not necessarily the effector that will be used or the trajectory that will be taken to reach the goal. In contrast, response selection is the process of choosing the appropriate action to take in response to a given stimulus. It is the intermediate process occurring between discrimination of a stimulus and planning of an action and usually involves a learned stimulus-to-response (S-R) mapping. For example, when driving a car toward an intersection, the usual response to a red traffic light (stimulus) is to press the brake pedal in order to stop the car (response).
Natural environments are...