?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A593514&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Walsh&rft.aufirst=E&rft.au=Walsh%2C+E&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral&rft.date=28+August+2008&rft.tpages=281&rft.title=Exploring+the+cognitive+precursors+of+movement+using+a+sensory-detection+task