Pulfrich phenomenon

Pulfrich phenomenon

(pul'frik), the binocular perception that a small target oscillating in the frontal plane is moving in an elliptic path; seen when one eye is covered by a filter or in the presence of a unilateral optic neuropathy.

Pul·frich phe·nom·e·non

(pŭl'frik fĕ-nom'ĕ-non) The binocular perception that a small target oscillating in the frontal plane is moving in an elliptic path seen when one eye is covered by a filter or in the presence of a unilateral optic neuropathy.

Pulfrich phenomenon

(poolf′rik) [Carl Pulfrich, Ger. physicist, 1858–1927] An alteration in depth perception that occurs when one eye receives light from a moving object earlier than the other eye. The moving object appears to be closer to or further from the viewer than it actually is.