Virtual reality (VR) has finally come of age for serious applications in the behavioral
neurosciences. After capturing the public imagination a decade ago, enthusiasm for VR …

It seems intuitively obvious that active exploration of a new environment will lead to better
spatial learning than will passive exposure. However, the literature on this issue is decidedly …

Background. Optimal management of cardiac tamponade resulting from pericardial effusion
remains controversial. Methods. Cardiac tamponade in 117 patients was treated with either …

Three experiments investigated" affordances" in visual guidance of stair climbing with 54
male college students. An affordance was defined as the functional utility of an object for an …

A necessary condition for visually guided action is that an organism perceive what actions
are afforded by a given environmental situation. Warren (1984) proposed that an affordance …

How is human locomotion visually controlled? Fifty years ago, it was proposed that we steer
to a goal using optic flow, the pattern of motion at the eye that specifies the direction of …

How might one account for the organization in behavior without attributing it to an internal
control structure? The present article develops a theoretical framework called behavioral …

Why do humans switch from walking to running at a particular speed? It is proposed that gait
transitions behave like nonequilibrium phase transitions between attractors. Experiment 1 …

Can moving observers distinguish the direction in which they are moving from the direction
in which they are looking? Radial patterns of optical flow could be used to perceive the …

Radial patterns of optical flow produced by observer translation could be used to perceive
the direction of self-movement during locomotion, and a number of formal analyses of such …