大家好 因為課程需要我安裝了psychtoolbox 基本上安裝的過程是順利的 安裝完後，我打 DotDemo 想要測試psychtoolbox能不能正常運作 結果它有跳出 psychtoolbox 的logo 但是沒有動畫出現 Command Window 上面顯示： PTB-INFO: Retina display. Enabling panel fitter for scaled Retina compatibility mode. PTB-INFO: This is Psychtoolbox-3 for Apple OS X, under Matlab 64-Bit (Version 3.0.12 - Build date: Oct 26 2015). PTB-INFO: Support status on this operating system release: OSX version 10.10 is not supported or tested anymore. PTB-INFO: Type 'PsychtoolboxVersion' for more detailed version information. PTB-INFO: Most parts of the Psychtoolbox distribution are licensed to you under terms of the MIT License, with PTB-INFO: some restrictions. See file 'License.txt' in the Psychtoolbox root folder for the exact licensing conditions. PTB-INFO: Always using Cocoa for fullscreen windows to work around graphics driver bugs in OSX. PTB-INFO: Presentation timing precision is not yet known for this configuration on most machines. Check your results. PTB-INFO: OpenGL-Renderer is Intel :: Intel(R) Iris(TM) Graphics 6100 :: 2.1 INTEL-10.6.33 PTB-INFO: Renderer has 1536 MB of VRAM and a maximum 1536 MB of texture memory. PTB-INFO: VBL startline = 1600 , VBL Endline = -1 PTB-INFO: Beamposition queries unsupported or defective on this system. Using basic timestamping as fallback: Timestamps returned by Screen('Flip') will be less robust and accurate. PTB-INFO: Measured monitor refresh interval from VBLsync = 16.700529 ms [59.878344 Hz]. (237 valid samples taken, stddev=0.989355 ms.) PTB-INFO: Small deviations between reported values are normal and no reason to worry. WARNING: Couldn't compute a reliable estimate of monitor refresh interval! Trouble with VBL syncing?!? ----- ! PTB - ERROR: SYNCHRONIZATION FAILURE ! ---- One or more internal checks (see Warnings above) indicate that synchronization of Psychtoolbox to the vertical retrace (VBL) is not working on your setup. This will seriously impair proper stimulus presentation and stimulus presentation timing! Please read 'help SyncTrouble' for information about how to solve or work-around the problem. You can force Psychtoolbox to continue, despite the severe problems, by adding the command Screen('Preference', 'SkipSyncTests', 1); at the top of your script, if you really know what you are doing. 想請問有沒有人遇過類似的問題？該怎麼處理？ 我是 MATLAB R2014a mac book pro OS X Yosemite 版本 10.10.5 謝謝 --

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