+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Motion aftereffects of wagon wheels: motion aftereffects follow apparent rather than real movement

, : Motion aftereffects of wagon wheels: motion aftereffects follow apparent rather than real movement. Perceptual and Motor Skills 79(1 Pt 1): 131-140

Power and Moulden have proposed a model which accounts for the movement of gratings in apertures including the barber pole illusion. It predicts the direction of motion aftereffects which follow from perceived veridical motion and the direction of these aftereffects which follow from the illusory movement experienced during the barber pole illusion. At a perceptual level, the model predicts motion aftereffects will follow direction of apparent movement rather than veridical direction. Four experiments tested this prediction. In Exp. 1 a spiral was viewed under flickering light so it appeared to be moving in the direction opposite to true motion, and the aftereffect was opposite to the apparent direction. In Exp. 2 the spiral was viewed through a narrow aperture so that it was effectively a grating appearing to move in the opposite direction to veridical motion. Again, the motion aftereffect was opposite to the apparent rather than true direction of rotation. In Exp. 3 a sectored disc was used, and similar results were obtained. In Exp. 4 the sectored disc was videotaped so that it appeared to be rotating in the direction opposite to true motion. The after motion to this "wagon wheel" effect was opposite to its apparent direction of rotation on the screen. In all experiments the predictions were confirmed, thereby confirming the general principle that motion aftereffects follow apparent rather than real direction of movement.


PMID: 7991303

DOI: 10.2466/pms.1994.79.1.131

Other references

Heidkamp, M.C.; Bayer, A.L.; Scully, B.T., 2003: Activation of focal adhesion kinase by protein kinase Ce in neonatal rat ventricular myocytes. Focal adhesion kinase (FAK) is a non-receptor protein tyrosine kinase critical for both cardiomyocyte survival and sarcomeric assembly during endothelin (ET)-induced cardiomyocyte hypertrophy. ET-induced FAK activation requires upstream activation...

Sasanka Goswami; Isahaque, N.M.M., 2001: Seasonal cycle of citrus shoot borer, Oberea posticata Gah. in Assam. Seasonal cycle of Oberea posticata Gah. was studied during 1999-2000 at Assam Agricultural Unviersty, Jorhat. Adult emergence started from second fortnight of March and continued till first fortnight of September. Egg laying continued till first f...

Schwarz, J.; Studler, U.; Bongartz, G., 2006: "Fat halo sign of the colon": not only in patients with inflammatory bowel disease. An illustrated case-report. A 76-year old man was referred for radiological evaluation of recurrent left sided flank pain, micro-haematuria and renal cysts. Computer tomographic findings were colon wall-thickening and submucosal fat (fat halo sign) throughout the entire leng...

Frigoletto, F.D.; Birnholz, J.C.; Rothchild, S.B.; Finberg, H.J.; Umansky, I., 1978: Intrauterine transfusion with the use of phased array ultrasonography: a new technique. Continuous ultrasonic observation of needle placement for aspiration, biopsy, or catheter placement is a novel and specific use of phased array imaging. In the case of IUTx, catheter placement into the fetal peritoneal space is accomplished rapidl...

Houskova L.; Rozkosny R., 1989: Diptera as bioregulators of earthworms in southern moravia czechoslovakia. A brief review of Diptera living in the larval stage as predators or parasitoids of earthworms is given. The occurrence of these flies was studied in 4 ecosystems and two ecotons in the area of Pohorelice and Drnholec in southern Moravia in 1986-1...

Klein, D.R., 1967: Prominent ears in children. Gp 36(2): 126-127

Demarco, R.; Hayward, L.; Lynch, M., 2002: Nursing students' experiences with and strategic approaches to case-based instruction: a replication and comparison study between two disciplines. In the classroom and in clinical areas, knowing how to learn, reason, reflect, think creatively, generate and evaluate ideas, make decisions, and solve problems have been identified as key elements of critical thinking. However, to be successful i...

Harant, H.; Delage, A., 1971: Simple remarks relating to the toxoplasma phase of various coccidia. Bulletin de L'academie Nationale de Medecine 155(19): 431-433

Diakiw, E., 1978: The Diakiw experiment. North American pomona: er 11 (3) 104-106

Schmelz, Gw, 1989: Notes on the fauna of the Chipola Formation - 32. A new species of the genus Cymatium (Mollusca: Gastropoda). Tulane Studies in Geology and Paleontology 22(3-4): 137-139