老师，我cd到psychotoolbox的路径下，运行SetupPsychotoolbox这个命令，然后再ScreenTest。还是报错

>> ScreenTest
Invalid MEX-file 'C:\Users\teacher4\Desktop\PTB3.0.10\Psychtoolbox\PsychBasic\MatlabWindowsFilesR2007a\Screen.mexw64': 找不到指定的模块。

出错 ScreenTest (line 8)
screens = Screen('Screens');