BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Vision & Cognition Seminar // Lukasz Grzeczkowski - Trans-saccadic
  perceptual learning
DTSTART:20190425T140000
DTEND:20190425T150000
DTSTAMP:20260511T165354Z
UID:105a3475426fd49f44a53afca44a2f95c0df053bce0b48f7aa010030
CATEGORIES:Conferences - Seminars
DESCRIPTION:Lukasz Grzeczkowski\, Allgemeine und Experimentelle Psychologi
 e\, Department Psychologie\, Ludwig-Maximilians-Universität München\, Mu
 nich\, Germany\nPerceptual learning is the ability to improve perception t
 hrough practice. The hallmark of perceptual learning is its specificity fo
 r the trained visual features such as the stimulus orientation and locatio
 n. For example\, training in discriminating Gabors’ orientation improves
  performance. However\, that training does not improve Gabor orientation d
 iscrimination at untrained locations. Perceptual learning is mostly studie
 d without eye movements. Nevertheless\, in everyday life\, a given stimulu
 s is actively explored through eye movements\, resulting in successive pro
 jections of that stimulus at different retinal locations. Here\, we studie
 d perceptual learning of orientation change discrimination across saccades
 . In Experiment 1\, observers trained to discriminate orientation changes 
 of a Gabor grating presented in the periphery while fixating in the center
 . Before and after training (pre- and post-training tests)\, observers wer
 e tested with the same task but with an orthogonal orientation at the trai
 ned location\, and the trained orientation at an untrained location. Expec
 tedly\, observers improved performance\, and perceptual learning was orien
 tation and location specific. In Experiment 2\, instead of fixating\, obse
 rvers in training and pre- and post-training test trials saccaded to the p
 eripheral grating\, and discriminated the orientation change occurring dur
 ing the saccade. Orientation and location conditions were the same as in E
 xperiment 1. Interestingly\, we found trans-saccadic perceptual learning f
 or orientation change discrimination. This perceptual learning did not tra
 nsfer to the untrained orientation. Surprisingly however\, we found transf
 er to the untrained location. Additionally\, after the trans-saccadic trai
 ning\, observers also improved their performance at discriminating orienta
 tion changes in the fixation condition such as described in Experiment 1. 
 We propose that perceptual learning within an active perception framework 
 might reflect different\, more generalizable mechanisms than classic perce
 ptual learning.\n \n 
LOCATION:SV 2510 https://plan.epfl.ch/?room=SV2510
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR