Yes, you are reading right our brain takes help of our eyes to hear more accurately and our ears contribute to our eyes in seeing with more precision. While eyes and ears alone cannot provide us reliable information, says researchers who conducted the study to prove that the brain uses multiple sensory inputs to give an appropriate, accurate and reliable reaction.
You will be astonished to know that our brain uses ears to see and eyes to hear better while our ear and eyes alone can give wrong information to brain and their collective information is required for brain to understand and respond appropriately. Human brain is wired such that it uses information from multiple senses to give the reliable reaction, says a new study
To demonstrate the role of multiple senses, researchers from the University of California in Los Angeles (UCLA) conducted a test in which they used different sets of sounds and lights in various combinations and asked all 384 participants aged between 18 and 22. who were part of the study, to identify where the light and sound originated.
While explaining the experiment, researchers said that the participants were asked to sit facing a black screen. Five speakers were kept behind the screen while a projector was wall mounted such that it could throw flashes at the spot on the screen where the speakers were located. Now researchers switched on the light and sounds simultaneously and one by one. Participants were asked to find the location from where sound or light were originated.
It was found that participants performed very poor when sound and light were played alone as they found light source to be much closer to the screen while sound source appeared to originate from the peripheral of the screen. However, when the light and sound were played simultaneously then nearly all participants identified the exact location of the source correctly.
The study highlights the fact that our brain has developed a habit of using information from multiple senses even for doing a single small task. Although researchers knew how brain works but no study was conducted yet to confirm the spatial performance of the brain. This is the first study that confirms the brain’s ability of spatial localisation.
“The brain is wired to use information from multiple senses to correct other senses. The saying is true – ‘If you want to hear better, put your glasses on’,” said Ladan Shams, a professor at UCLA.“Our basic sensory representation of the world u2014 how information from our eyes and ears is processed by neurons in the brain u2014 is inaccurate,” she added.
The study was published in the journal PLOS Computational Biology.