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  • simmon effect : build the funcion of trail list

    #the real experiment for simon effect
    #load the library which is our need
    import pygame
    import sys
    import random
    from pygame.locals import *
    
    pygame.init()
    win = pygame.display.set_mode((800,600),DOUBLEBUF|HWSURFACE)
    left = (200,300)
    right = (600,300)
    red  =(255,0,0)
    blue = (0,0,255)
    black = (0,0,0)
    
    #wait for the pressed key
    
    def wait4key(duration,key_list):
        """the function is to wait for subject to press the right key , and the experient will continue untill the
    subject press the key
    duration : the time which is the subject wait to press the key ,if the time is too long ,the experiment will
    continue automaticly.
    key_list: the key which the subject need to press to continue the experiment, and the key_list must 
    be a list such as [K_A,K_/]"""
        
        fake_bool =False
        time_out = False
    
        #empty the event before 
        pygame.event.clear()
        
        #use for count the time
        start_time = pygame.time.get_ticks()
        
        #if the subject does not press the right key, he will in the while loop all the time untill the duration is exhausted
        while  not (fake_bool or time_out):
            end_time = pygame.time.get_ticks()
            #if the duration is too long , the experiment will continue
            if end_time - start_time > duration:
                time_out = True
            #if subject press the right key ,the experimet will continue
            for i in pygame.event.get():
                if i.type ==KEYDOWN:
                    if i.key in key_list:
                        #prepare for the result of the function
                        response_time = pygame.time.get_ticks()
                        key_name = pygame.key.name(i.key)
                        #if has the right key ,the loop will quit
                        fake_bool = True
        #in the end, if subject press the key ,we will collect the time , and the name of the key
        if fake_bool:
            return start_time, response_time, key_name
        #the purpose of the next line is stay the same with the result
        else:
            return start_time, None, None
            
    #experiment for 10 times
    
    #creat the list
    #L mean left ,R mean right , RE mean the color red, BL mean the color blue
    lis = [ ["L","RE","Z"],
            ["L","BL","/"],
            ["R","RE","Z"],
            ["R","BL","/"]]
    
    #creat a function to ran one trial
    def one_trial_list(pars):
    #the parameters must be a list which contains the location, color ,right response of the stimuli and the the sequence of the element of parameters should not change"""
        global left
        global right
        global red
        global blue
        global black
        loc,col,ress=pars
        if loc =="L":
            pos = left
        if loc =="R":
            pos = right
        if col =="BL":
            color = red
        if col == "RE":
            color = blue
    
        win.fill(black)
        pygame.draw.circle(win,color,pos,20,0)
        pygame.display.flip()
        result = wait4key(2000,[K_z,K_SLASH])
        print(result)
    
    
    #random our lis which contains four trails
    lis1 = lis*2
    random.shuffle(lis1)
    
    #run four trials
    for i in lis1:
        one_trial_list(i)
        
        #when one trail end ,fill the window black again
        win.fill(black)
        pygame.display.flip()
        pygame.time.delay(500)
    pygame.quit()
    sys.exit()
        
     

    another function to improve our experiment

     the result

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  • 原文地址:https://www.cnblogs.com/zijidefengge/p/11581122.html
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