TY  - JOUR
PY  - 2002//
TI  - Binocular information about time to collision and time to passage
JO  - Vision research
A1  - Regan, D.
SP  - 2479
EP  - 2484
VL  - 42
IS  - 22
N2  - It is well known that, when an object's horizontal relative disparity is changing appropriately, most observers report a compelling impression that the object is approaching and will collide with the observers at some future instant. Here I derive a new equation, namely TTC approximates (ddelta/dt)/(d(2)delta/dt(2)). This equation relates TTC to retinal image variables without involving a knowledge of the approaching object's distance or speed. In this respect the new equation is the binocular equivalent of the well-known equation for tau.<p /> <p>Language: en</p> 
LA  - en
SN  - 0042-6989
UR  - http://dx.doi.org/
ID  - ref1
ER  -