Perception of acceleration in motion-in-depth with only monocular and both monocular and binocular information

• Autores: Joan López Moliner, Alejandro Maiche Marini, Santiago Estaun Ferrer
• Localización: Psicológica: Revista de metodología y psicología experimental, ISSN-e 1576-8597, ISSN 0211-2159, Vol. 24, Nº 1, 2003, págs. 93-108
• Idioma: inglés
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• Resumen

  • Observers are often required to adjust actions with objects that change their speed. However, no evidence for a direct sense of acceleration has been found so far. Instead, observers seem to detect changes in velocity within a temporal window when confronted with motion in the frontal plane (2D motion). Furthermore, recent studies suggest that motion-in-depth is detected by tracking changes of position in depth. Therefore, in order to sense acceleration in depth a kind of second-order computation would have to be carried out by the visual system. In two experiments, we show that observers misperceive acceleration of head-on approaches at least within the ranges we used [600-800 ms] resulting in an overestimation of arrival time.

    Regardless of the viewing condition (only monocular or monocular and binocular), the response pattern conformed to a constant velocity strategy.

    However, when binocular information was available, overestimation was highly reduced.