Judging the contact-times of multiple objects : Evidence for an early bottleneck
BAURES ; OBERFELD ; HECHT ; CAVALLO
Type de document
COMMUNICATION AVEC ACTES NATIONAL (ACTN)
Langue
anglais
Auteur
BAURES ; OBERFELD ; HECHT ; CAVALLO
Résumé / Abstract
The accuracy of time-to-contact (TTC) judgments for single approaching objects is well researched, however, close to nothing is known about our ability to make simultaneous TTC judgments for two or more objects. In a first experiment, we assessed the performances of observers when estimating the absolute TTC of two objects, and compared the performance to a standard single-object condition. The results showed that the two respective TTC estimates interfere with one another in an asymmetric fashion. The TTC of the later-arriving object is systematically overestimated, while the estimated TTC for the first-arriving object is as accurate as in a condition presenting only a single object. A second experiment revealed that the processing bottleneck in TTC estimation originates at the earlier stages of the TTC estimation.
Editeur
ACAPS
