Multiple sources of information and time-to-contact judgments

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Multiple sources of information and time-to-contact judgments

Four experiments examined how the visual system deals with multiple information sources for perceiving dynamic events. Two tau-type optical variables, one defined by the expanding object's image and the other defined by the expanding angular extent composed of the line of sight and the object's shadow, were manipulated in time-to-contact judgments. When the information specified by both variabl...

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The different sources of information that can be used to estimate time-to-contact may have different degrees of reliability across time. For example, after a given presentation or display time, an absolute change of angular size can be more reliable than the corresponding estimation of the rate of angular expansion (e.g. motion information). One could then expect systematic biases in the observ...

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ژورنال

عنوان ژورنال: Vision Research

سال: 2006

ISSN: 0042-6989

DOI: 10.1016/j.visres.2005.12.011