bite bar

1. a device used to immobilize a participant’s head during studies of visual perception. A bite bar contains an impression of the participant’s teeth, so that when the bar is held between the jaws the head cannot move.

2. in animal research, a bar placed in the mouth to restrain animals during surgery or to immobilize animals that are being tested.

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Psychology term of the day

January 15th 2025

cochlear implant

an electronic device designed to enable individuals with complete deafness to hear and interpret some sounds, particularly those associated with speech. It consists of a microphone to detect sound, a headpiece to transmit sound, a processor to digitize sound, and a receiver to signal electrodes that are surgically implanted in the cochlea to stimulate the auditory nerve. In contrast to a hearing aid, which amplifies sound, it directly stimulates the auditory nerve.