{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T13:11:08Z","timestamp":1791119468460,"version":"4.1.0"},"reference-count":20,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[1990,8,1]],"date-time":"1990-08-01T00:00:00Z","timestamp":649468800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Perception"],"published-print":{"date-parts":[[1990,8]]},"abstract":"<jats:p>When the eyes pursue a fixation point that sweeps across a moving background pattern, and the fixation point is suddenly made to stop, the ongoing motion of the background pattern seems to accelerate to a higher velocity. Experiment I showed that this acceleration illusion is not caused by the sudden change in (i) the relative velocity between background and fixation point, (ii) the velocity of the retinal image of the background pattern, or (iii) the motion of the retinal image of the rims of the CRT screen on which the experiment was carried out. In experiment II the magnitude of the illusion was quantified. It is strongest when background and eyes move in the same direction. When they move in opposite directions it becomes less pronounced (and may disappear) with higher background velocities. The findings are explained in terms of a model proposed by the first author, in which the perception of object motion and velocity derives from the interaction between retinal slip velocity information and the brain's \u2018estimate\u2019 of eye velocity in space. They illustrate that the classic Aubert\u2013Fleischl phenomenon (a stimulus seems to be moving slower when pursued with the eyes than when moving in front of stationary eyes) is a special case of a more general phenomenon: whenever we make a pursuit eye movement we underestimate the velocity of all stimuli in our visual field which happen to move in the same direction as our eyes, or which move slowly in the direction opposite to our eyes.<\/jats:p>","DOI":"10.1068\/p190471","type":"journal-article","created":{"date-parts":[[2007,1,23]],"date-time":"2007-01-23T10:29:11Z","timestamp":1169548151000},"page":"471-482","source":"Crossref","is-referenced-by-count":57,"title":["An Acceleration Illusion Caused by Underestimation of Stimulus Velocity during Pursuit Eye Movements: Aubert\u2013Fleischl Revisited"],"prefix":"10.1177","volume":"19","author":[{"given":"Alexander H","family":"Wertheim","sequence":"first","affiliation":[{"name":"TNO Institute for Perception, Kampweg 5, 3769 DE Soesterberg, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter","family":"Van Gelder","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, New York University Medical Center, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[1990,8,1]]},"reference":[{"key":"bibr1-p190471","doi-asserted-by":"publisher","DOI":"10.1007\/BF01612166"},{"key":"bibr2-p190471","doi-asserted-by":"publisher","DOI":"10.1007\/BF01612710"},{"key":"bibr3-p190471","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4613-3569-6_6"},{"key":"bibr4-p190471","first-page":"R33","volume":"384","author":"Buechele W","year":"1980","journal-title":"Pfl\u00fcgers Archiv, Supplement"},{"key":"bibr5-p190471","doi-asserted-by":"publisher","DOI":"10.1007\/BF00424712"},{"key":"bibr6-p190471","first-page":"327","volume":"82","author":"Dichgans J","year":"1972","journal-title":"Bibliotheca Opthalmologica"},{"issue":"86","key":"bibr7-p190471","first-page":"7","author":"von Fleischl E","year":"1882","journal-title":"Sitzungsberichte der Akademie der Wissenschaften in Wien"},{"key":"bibr8-p190471","doi-asserted-by":"publisher","DOI":"10.1016\/0042-6989(88)90172-1"},{"key":"bibr9-p190471","doi-asserted-by":"publisher","DOI":"10.2307\/1419230"},{"key":"bibr10-p190471","doi-asserted-by":"publisher","DOI":"10.1080\/14640747308400324"},{"key":"bibr11-p190471","doi-asserted-by":"publisher","DOI":"10.1016\/0042-6989(78)90077-9"},{"key":"bibr12-p190471","doi-asserted-by":"publisher","DOI":"10.2307\/1421452"},{"key":"bibr13-p190471","doi-asserted-by":"publisher","DOI":"10.1068\/p060529"},{"key":"bibr14-p190471","unstructured":"Probst T, Degner D, Brandt T, 1980 \u201cObject motion perception affected by concurrent self motion\u201d paper presented at the Third European Conference on Visual Perception, Brighton, UK"},{"key":"bibr15-p190471","doi-asserted-by":"publisher","DOI":"10.1126\/science.6740325"},{"key":"bibr16-p190471","doi-asserted-by":"publisher","DOI":"10.3758\/BF03211217"},{"key":"bibr17-p190471","doi-asserted-by":"publisher","DOI":"10.1016\/0001-6918(81)90052-4"},{"key":"bibr18-p190471","doi-asserted-by":"publisher","DOI":"10.1068\/p160299"},{"key":"bibr19-p190471","first-page":"171","volume-title":"The Perception and Control of Egomotion","author":"Wertheim A H","year":"1990"},{"key":"bibr20-p190471","volume-title":"report IZF 1984\u20138","author":"Wertheim A H","year":"1984"}],"container-title":["Perception"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1068\/p190471","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1068\/p190471","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T22:05:03Z","timestamp":1777586703000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1068\/p190471"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1990,8]]},"references-count":20,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1990,8]]}},"alternative-id":["10.1068\/p190471"],"URL":"https:\/\/doi.org\/10.1068\/p190471","relation":{},"ISSN":["0301-0066","1468-4233"],"issn-type":[{"value":"0301-0066","type":"print"},{"value":"1468-4233","type":"electronic"}],"subject":[],"published":{"date-parts":[[1990,8]]}}}