Simon K. Rushton, Ph.D.
Cambridge Basic Research,
Nissan Research & Development, Inc.,
Cambridge, MA
will speak on
An Eccentric Egocentric Model of Control of Locomotion on Foot
Abstract:
What visual information do you use when you wish to walk directly to a
target rather than in a different direction? Recent experimental
data suggests it is the perceived egocentric direction of target, derived
through use of gaze direction (Rushton et al, 1998, Current Biology).
This finding challenges the major assumption that has underpinned
the computational modelling, psychophysics, neurophysiology and imaging
work on optic flow. I will describe the original locomotion finding
and review recent replications, extensions and critiques. Data newly
collected at CBR will be presented along with a theoretically sufficient model
of locomotion, the eccentric egocentric model. I argue that locomotion
should now be placed alongside other actions such as reaching that share
the use of egocentric direction information.
The lecture will take place in the Lecture Hall, Room 203, 44 Cummington
St.
on Monday, November 22, 1999
at 1:00 pm
Hosted by the
Brain and Vision Research Laboratory