Product Number: HMS-200
In the classic Stroop paradigm, a subject is presented with a task designed to affect reaction time. For example, the stimulus may be the word “green” printed in red ink and the subject is required to respond to the ink color rather than the word itself. In this variation of the classic procedure, the subject is presented with photographs on different colored backgrounds and is asked to respond to the background color. Reaction time is measured as an index of any interference in processing time introduced by the subjects’ reaction to the content of the photographic image. The software controls the separate monitor on which the subject views the images and records the responses from a four-button console on which the subject indicates the background color. Both the latency of the response and the color choice are recorded. The stimulus may, at the users’ discretion, be masked by a different image on some or all trials. On masked trials, the stimulus is presented for a brief time and is then masked by another image. The subject is instructed to respond to the first image only. In addition to response data, the system collects psychophysiological data for EMG (one or two channels), ECG and SCR. |
