Seminar Details
2008-04-22 (14.00) : Interactions Between Explicit and Implicit Timing
At Euler building
Organized by Mathematical Engineering
Speaker :
Jérémy Badler
( CESAME
)
Abstract :
When stimuli are temporally regular, their prediction depends on an
implicit representation of elapsed time. However, it is unclear
whether the underlying timing mechanism is separable from a
conscious, explicit perception of time. To address the question,
human subjects had to predict the duration of an interval either
explicitly, with a button press, or implicitly, by accurately
tracking with the eyes a suddenly-moving target. Performing the
tasks concurrently yielded a delay in response times for both
modalities compared to single-task trials. This suggests that implicit
and explicit time representations are partially independent, and invoking
them simultaneously increases the attentional load on the brain.