| Title |
Effects of Müller-Lyer illusion on the accuracy of primary saccades and smooth pursuit eye movements |
| Another Title |
Miulerio ir Lajerio iliuzijų įtaka pirminių sakadų ir tolygių sekamųjų akių judesių tikslumui. |
| Authors |
Laurutis, Vincas ; Indrijauskienė, Ingrida ; Zemblys, Raimondas ; Niauronis, Saulius |
| DOI |
10.5755/j01.itc.41.1.763 |
| Full Text |
|
| Is Part of |
Informacinės technologijos ir valdymas = Information technology and control.. Kaunas : Technologija. 2012, t. 41, Nr. 1, p. 40-45.. ISSN 1392-124X. eISSN 2335-884X |
| Keywords [eng] |
Visuo-motor system ; Double-step saccades ; Smooth pursuit eye movements ; Illusion ; Dynamic illusion evaluation |
| Abstract [eng] |
The goal of the present investigation was to support or to oppose the two-visual-system (vision–for perception and vision-for action) hypothesis. Since illusions might be the subject of misinterpretation and the loss of presented information, we decided to examine how Müller-Lyer (M-L) illusion affects accuracy of double-step saccades and smooth pursuit eye movements and compare these results with those obtained during perceptual judgment of the length of the shaft of M-L illusion. Experimental investigation revealed that the primary saccades elicited in double-step mode were mostly affected by the M-L illusion. The position errors of the primary saccades elicited in the reflexive mode were affected by 4% for wings-in illusion and by 3.6% for wings-out illusion comparing with the 0.25% and 0.1% for the saccades elicited in the voluntary mode. The position errors of complete saccades (0.14% and 0.02%) and tracking errors obtained during the smooth pursuit (0.11% and 0.05%) were negligibly small. Nevertheless, experimental results obtained during perceptual judgment of M-L illusion were substantially larger - 14% and 10%, respectively. Our experimental investigation of the accuracy of saccadic and smooth pursuit eye movements elicited to the stimulus with M-L illusion unfolded that the visuo-motor system is able to resist to the illusory stimulus and supported the two-visual-systems hypothesis. Obtained results have demonstrated that the main parameter, which plays the most important role on the precision of visuo-motor behavior, is the uncertainty of perception of the shape and the position of the illusionary stimulus. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
English |
| Publication date |
2012 |
| CC license |
|
