Describir: Theories of perception and the concept of structure :

  ______   _    _               _____     ______    _____     _____   
 /_   _// | || | ||     ___    |  ___||  /_   _//  |  ___||  |__  //  
 `-| |,-  | || | ||    /   ||  | ||__      | ||    | ||__      / //   
   | ||   | \\_/ ||   | [] ||  | ||__     _| ||    | ||__     / //__  
   |_||    \____//     \__ ||  |_____||  /__//     |_____||  /_____|| 
   `-`'     `---`       -|_||  `-----`   `--`      `-----`   `-----`  
                         `-`                                          
   ___    
  / _ \\  
 | / \ || 
 | \_/ || 
  \___//  
  `---`