Abstract: A ball return device which is a attached to a throwing and catching apparatus, such as a lacrosse stick, so that a person can play alone. Rubber tubing is permanently attached to a ball and releasably attached to the throwing and catching apparatus. When the ball is thrown, the tubing stretches and causes the ball to return toward the user.

Abstract: This equipment tests several psycho-physiological functions, the main of which is the study of optical and material coordination. It is used for testing the alertness and rate of perception of the tested subject. The equipment consists of the following main components: a) Control mechanism; b) pulser; c) intermittent flash signals and their relay mechanism; d) testing timer; and e) recording mechanism (counter).Pulsations are omitted with a selected frequency which are transformed into flash signals, or other signs, pictures or symbols, which are visible on the frosted glass in the different spaces and at a different rate of speed. Testing can be performed in two ways:1. Frequency of flash signals is automatic.2. Frequency of flash signals is mechanical.