Ive just completed a study showing that it is possible to predict the direction of movement by analyzing the brain activity recorded from human prefrontal cortex. We were able to tell where a visual stimulus was located on the screen using brain activity from this area as well. This study was conducted using implanted electrodes in human cortex recording large-scale population activity. Ive posted the abstract below, as well as a link to the article (in press at Nature Neuroscience) if anyone is interested in reading it.

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TITLE: Spatial selectivity in human ventrolateral prefrontal cortex.

AUTHORS: Rizzuto, Mamelak, Sutherling, Fineman and Andersen

ABSTRACT:
The functional organization of lateral prefrontal cortex is not well
understood and debate exists as to whether the dorsal and ventral
aspects mediate spatial and non-spatial functions, respectively. We show
for the first time that recordings from human ventrolateral prefrontal
cortex exhibit spatial selectivity, supporting the idea that
ventrolateral prefrontal cortex is involved in spatial processing. Our
results also indicate that prefrontal cortex may be a source of control
signals for neuroprosthetic applications.

vis.caltech.edu/~rizzuto/p...oEtal05.pdf