Sunday, July 17, 2016

Sights and Sounds

 
A few weeks ago, we took Alex to a concert in our downtown park, where he enjoyed the upbeat popular music the band played. Even though Alex has sound sensitivity, he never seemed to be bothered by the volume of the music, which was not uncomfortably loud. Near the end of the concert, when it began to get dark, they turned on the stage lights that began to flash various colors. Suddenly, Alex seemed a bit distressed temporarily and put his fingers in his ears, as if he were overwhelmed by sound, even though the volume had not changed. When we asked him if the music was too loud, he told us it wasn’t, and after a few moments with his fingers in his ears, he relaxed and took his fingers out of his ears, ready to enjoy the music again, assuring us that he wanted to stay for the rest of the concert. Clearly, he had a sensory overload and used coping skills to manage it successfully. However, why did he plug his ears for a visual assault on his senses?

On the Fourth of July, we took him to see the local fireworks display. A couple of years ago, we discovered a place where we could park and watch the fireworks from our car that was away from the crowds and noise and where we could leave quickly should Alex become overwhelmed by the sights and sounds. However, Alex loves fireworks displays, and we have never had to leave early because he deals with the bright lights and loud noises amazingly well. At one point in the show, a firework display had a sequence of very bright flashing lights yet made no sound as they shone, and Alex once again put his fingers in his ears. Perhaps he was anticipating the loud boom he thought they were ready to make, but I think there was another reason for plugging his ears. Concerned that he was overwhelmed, we offered to leave, but he assured us that he was all right and wanted to stay for the entire fireworks show. After a few seconds of plugging his ears, he adapted and enjoyed the rest of the fireworks.

A couple of days ago, Alex and I were watching a new television show called Greatest Hits in which singers and bands perform their hit songs from the ‘80’s and early 90’s. Even though these songs are before his time (as he always reminds us that he doesn’t remember them), he thoroughly enjoys these old tunes. Because Alex’s hearing is acute, we usually keep our television volume turned down fairly low so that it doesn’t bother him. Near the end of the show as one of the bands was performing, suddenly the stage lights came on and began flashing brightly. Knowing that the volume had not changed, I watched him to see how he would react to the flashing lights, and he put his fingers in his ears briefly. Of course, he could have left the room or turned off the television, but he wanted to watch the show, so he used his coping mechanism of putting his fingers in his ears for a few moments, knowing this sound blocking mechanism allows him to continue.

Curious as to why Alex blocks sound when his senses are assaulted visually, I began looking for some research. Most people would close their eyes if flashing lights bother them, but blocking sound seems to help him cope with the sensory overload. In my search, I found a recent online article in Spectrum entitled “Sight may mix with sound in autism brains,” written by Jessica Wright and published May 13, 2016. [To read this article, please click here.] This interesting article summarizes findings presented at the 2016 International Meeting for Autism Research in Baltimore and published in May in the journal Autism Research.

Using magnetic resonance imaging, the researchers tested children and teenagers who were typical and those who have autism to see where in the brain they processed visual and auditory stimuli. For visual tasks, the children were shown pictures of rectangles and dots and were told to indicate the position of the dot as high or low. For auditory tasks, they listened to tones and were to indicate whether the pitch of the sound was high or low. While both groups––those with autism and those with typical development––performed well on correctly identifying the positions and tones, the MRI indicated different processing in the brains of the children with autism.

Specifically, both groups scored in the mid-90 percentage range on identifying the position of the dot as low or high; however, the typical group scored slightly better (93%) than those with autism (83%) on identifying low and high tones. The researchers also noted that the MRI indicated that the visual cortex of the typical children shut down when they were engaged in the listening task. However, when listening to the sounds, the visual cortex became more active in the brains of the children with autism. This may account for the sensory overload children with autism often exhibit; their brains are taking in both visual and auditory stimuli instead of shutting out what they don’t need at the time.

These researchers suggests that children with autism may be using visual areas of the brain to process sound, perhaps to compensate for weaknesses in the brain areas that process sound. Typically, people with autism have strong visual skills, allowing them to create pictures in their minds easily. Alex often tells use that he can visualize words and numbers in his mind, which makes mentally calculating complicated math problems easy for him. On the other hand, there seems to be confusion for him between the visual and auditory stimuli, as evidenced by his attempts to block sounds when flashing lights overwhelm his visual field. Maybe he is experiencing a “sensory crossover” described in this research, but instead of seeing sound, he is hearing sights.

If, indeed, his brain processes stimuli differently, he has learned a coping skill to deal with overwhelming situations. Perhaps by blocking the sound briefly, he is able to focus on the visual and then add the sound when he is ready. As a primarily auditory learner, I know that I sometimes have to close my eyes to focus upon what I’m hearing, to block out the visual that distracts me so that I may concentrate on listening. Alex seems to be doing a similar technique, yet because his brain may work differently, he blocks sound instead of sight, which is his strongest modality for learning. Whatever the reason, I’m pleased that he has developed a method to help him adjust when he is dealing with a variety of sights and sounds so that his brain can handle all there is to see and hear and so that he can enjoy all life has to offer.

“Ears to hear and eyes to see––both are gifts from the Lord.” Proverbs 20:12

2 comments:

Adelaide Dupont said...

It protects the corners of the eyes and the whole face.

"Specifically, both groups scored in the mid-90 percentage range on identifying the position of the dot as low or high; however, the typical group scored slightly better (93%) than those with autism (83%) on identifying low and high tones. The researchers also noted that the MRI indicated that the visual cortex of the typical children shut down when they were engaged in the listening task. However, when listening to the sounds, the visual cortex became more active in the brains of the children with autism. This may account for the sensory overload children with autism often exhibit; their brains are taking in both visual and auditory stimuli instead of shutting out what they don’t need at the time."

Pam Byrne said...

Dear Adelaide,

Thank you for your comment; I really appreciate your perspective and input to help me understand Alex better.

Take care,
Pam