關鍵發佈Psychopy

我對psychopy相當陌生，但迄今爲止我在錄製鍵盤事件方面遇到了很多麻煩。鍵盤演示工作，所以我知道這是可能的，但是當我在我自己的程序中實現代碼時，它根本不記錄任何鍵盤活動。現在我的程序非常簡單，因爲我只是試圖去掌握它。我有一張照片，並且想要在照片顯示在屏幕上時記錄按鍵的持續時間。我有幾個打印語句作爲理智檢查，當我運行它（並使用鍵盤）時，它不會打印任何內容。下面是我的代碼的輪廓：關鍵發佈Psychopy

from psychopy.iohub import launchHubServer, EventConstants 

io = launchHubServer() 
keyboard = io.devices.keyboard 
keyboard.reporting = True 

#-------Start Routine "trial"------- 
continueRoutine = True 
io.clearEvents('all') 
duration_lst=[] 
while continueRoutine and routineTimer.getTime() > 0: 
    # get current time 
    t = trialClock.getTime() 
    frameN = frameN + 1 # number of completed frames (so 0 is the first frame) 
    # update/draw components on each frame 

    # *image* updates 
    if t >= 0.0 and image.status == NOT_STARTED: 
     # keep track of start time/frame for later 
     image.tStart = t # underestimates by a little under one frame 
     image.frameNStart = frameN # exact frame index 
     image.setAutoDraw(True) 
    if image.status == STARTED and t >= (0.0 + (5.0- win.monitorFramePeriod*0.75)): #most of one frame period left 
    image.setAutoDraw(False) 
    # *ISI* period 
    if t >= 0.0 and ISI.status == NOT_STARTED: 
     # keep track of start time/frame for later 
     ISI.tStart = t # underestimates by a little under one frame 
     ISI.frameNStart = frameN # exact frame index 
     ISI.start(0.5) 
    elif ISI.status == STARTED: #one frame should pass before updating params and completing 
     ISI.complete() #finish the static period 
    # get keyboard events 
    for event in keyboard.getEvents(): 
     print event 
     if event.type == EventConstants.KEYBOARD_CHAR: 
      key_press_duration=event.duration 
      duration_lst.append(key_press_duration) 
      print duration_lst 

    # check if all components have finished 
    if not continueRoutine: # a component has requested a forced-end of Routine 
    break 
    continueRoutine = False # will revert to True if at least one component still running 
    for thisComponent in trialComponents: 
     if hasattr(thisComponent, "status") and thisComponent.status != FINISHED: 
      continueRoutine = True 
      break # at least one component has not yet finished 

    # check for quit (the Esc key) 
    if endExpNow or event.getKeys(keyList=["escape"]): 
     core.quit() 

    # refresh the screen 
    if continueRoutine: # don't flip if this routine is over or we'll get a blank screen 
     win.flip()

來源

2015-09-23 Aysja Johnson

我剛纔看了一下'keyboard.py'的ioHub演示源代碼，它使用'keyboard.getKeys（）'而不是'keyboard.getEvents（）'。這有什麼區別嗎？ –

嗨 - 是的，它的確如此。不幸的是，他們在演示中做到這一點的方式並不適用於我的... key.duration沒有返回任何內容。我只是通過獲取keyPresses（）和keyReleases（）來減少它們，而不是使用似乎完全無響應的事件（儘管計算持續時間更容易），謝謝！ –

我想在這裏剝離所有不必要的東西（變量，窗口，刺激等），並使用keyboard.getReleases()所以它歸結爲：

from psychopy import iohub 
io = iohub.launchHubServer() 
keyboard = io.devices.keyboard 
print 'press something now!' 
while True: 
    # get keyboard releases 
    for event in keyboard.getReleases(): 
     print 'Released!'

這應該打印控制檯中每個密鑰版本的所有信息。至少，它適用於我。如果它也適用於您，則問題可能與腳本中的其他內容有關。

來源

2015-09-23 14:45:51

關鍵發佈Psychopy

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