Is my memory an extended notebook?

Clark and Chalmers' conception of spatially extended memory is under- pinned by an objectified conception of biological memory. To the extent that this can be identified with a ‘storage’ approach to memory, criticisms of it are well known and an alternative approach, perhaps more suited to an enactive account of cognition, might be one which focuses on remembering as a type of action. In the Otto story the objectification of memory is apparent not only in C&C’s characterization of the notebook but also in the notion that Inga’s memory is notebook-like. Insofar as Inga’s practices, or conceptions, of remembering might be notebook-like this should not be taken as evidence of the existence of an internal store, but could instead be the result of prior interaction with notebook-like artifacts

Judging where a ball will go: the case of curved free kicks in football

International audienceThis study examined whether adding spin to a ball in the free kick situation in football affects a professional footballer's perception of the ball's future arrival position. Using a virtual reality set-up, participants observed the flight paths of aerodynamically realistic free kicks with (+/- 600 rpm) and without sidespin. With the viewpoint being fixed in the centre of the goal, participants had to judge whether the ball would have ended up in the goal or not. Results show that trajectories influenced by the Magnus force caused by sidespin gave rise to a significant shift in the percentage of goal responses. The resulting acceleration that causes the ball to continually change its heading direction as the trajectory unfolds does not seem to be taken into account by the participants when making goal judgments. We conclude that the visual system is not attuned to such accelerated motion, which may explain why goalkeepers appear to misjudge the future arrival point of such curved free kicks