Dynamics of visuo-spatial remembering: a study of information structuring in memory.
We studied the process by which learning a pattern of motor activity reaches a steady-state characterized by a reduction in fluctuations. The stimuli consisted of eight visually presented dots that appeared sequentially. In a 20-trial learning phase, participants reproduced the positions of the eight dots after each presentation. Next, they reproduced the pattern 40 times without renewed presentation. In one condition, spatial distances between the dots were proportional to the intervals between their appearances; in the other they were not proportional. We analyzed how the reproduction stabilized at the configuration and dot levels. In proportional as well as non-proportional conditions, stabilization occurs at different time scales for the configuration and dot levels. The stabilization rate differed between proportional and non-proportional conditions. These results are discussed in the framework of dynamical systems.
Berberian
Bruno
B
UMR 6152, Mouvement et Perception, Faculté des Sciences du Sport, Université de la Méditerranée CP 910, 13288 Marseille Cedex 09, France. bruno.berberian@univmed.fr
Sarrazin
Jean-Christophe
JC
Giraudo
Marie-Dominique
MD
D000328:Adult; D004192:Discrimination, Psychological / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D011939:Mental Recall / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values; D012691:Serial Learning / Q000502:physiology*; D013028:Space Perception / Q000502:physiology*; D013998:Time Perception / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology