Abstract: Limb movements (movement to positions in space and body movement patterns) are one of the important ways individuals interact with their environment. Previous behavioral studies and neuroimaging studies explored the storage of information of movement to positions and body movement patterns information, respectively. They found that the storage of two kinds of limb movement information is independent of the phonological loop and the visual subsystem in the visuospatial sketchpad and needs the participation of the spatial subsystem in the visuospatial sketchpad; movement to positions in space and body movement patterns activate different movement-related cortexes that are independent of the phonological loop, the visual subsystem and the spatial subsystem in the visuospatial sketchpad. These results show that the existing multicomponent model of working memory cannot fully explain the storage of limb movement information. It is implied that there is a "limb movement system" in the working memory system that is specific to limb movement information, belongs to visuospatial sketchpad and coexists with the visual subsystem and spatial subsystem. The brain areas activated in the "limb movement system" vary with different kinds of limb movements.

Key words: body movement information, movement to positions in space, body movement patterns, spatial working memory, movement-related cortex