An apparatus that projects a few pictures onto a screen at rapid speed to test visual perception, memory, and discovering.
a device that displays a few brief pictures; employed by psychologists to research perception, memory and learning
An apparatus for revealing briefly to see a screen bearing letters or figures. It is used in studying the product range of attention, or even the energy of identifying individual things in one single impression.
In experimental therapy, an apparatus which reveals to view, for a brief and precisely variable-time, an object or little band of items (letters, short words, etc.).
medical instrument used by psychologists; gifts artistic stimuli for brief exposures