Eye blink elicitation and measurement in the human infant
- Cite this article as:
- Marsh, R.R., Hoffman, H.S. & Stitt, C.L. Behavior Research Methods & Instrumentation (1979) 11: 498. doi:10.3758/BF03201364
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Eye blinks elicited by a mechanically produced tap to the glabella (the flattened area between the eyebrows) are monitored by a device that projects low-intensity infrared light, which is reflected from the eyelid and detected by a phototransistor. Appropriate filtering and decoding circuitry insures reliable tracking of responses. Comparison of the optical eye blink monitor with a minitorque potentiometer monitor showed the two devices to yield similar recordings.