A really fascinating phenomenon in autism is, sensation lasts too lengthy. Non-autistics 'neglect' the feeling in a short time. For instance, if you dress within the morning you'll be able to really feel your garments in your pores and skin, however quickly the sensation fades. This fading sensation known as habituation. It's the similar with odor and style, or every other sense. If the senses are uncovered to a seamless stimulus, habituation quickly happens. When the stimulus modifications, the sensation returns. That's the reason you do not really feel the garments you're sporting and grow to be conscious of them provided that you modify or regulate them (Bogdashina 2003). For a lot of autistic people, nonetheless, the habituation course of does not work correctly and the feeling lasts too lengthy. For some, it takes a number of days to cease feeling their garments on the physique. And sadly, when this comfy feeling (or 'no-feeling') has been achieved it's time to put on clear ones, so the method of getting used to the feeling begins once more. Probably the most troublesome instances are after they have to alter from winter garments to summer season ones and the opposite manner spherical. It takes weeks to get used to sporting shorts and short-sleeved tops. However the time they really feel comfy sufficient to reveal the pores and skin, it is autumn and time to start out sporting trousers and long-sleeved jumpers once more.
One other (fairly frequent) downside brought on by their problem to cease feeling sensation is when their nails are being reduce. As an illustration, Alex (an autistic boy) hates it as the method of 'slicing' does not cease when his mom places the scissors away. It isn't that the sensation of nails being reduce stays, however moderately that the floor of the reduce nail is broader and makes it really feel just like the air is 'urgent on' the nails. The boy retains feeling the feeling for at the very least three to 4 days. He tries to explain the way it feels, however due to his variations in utilizing the language, one of the best he comes up with is, 'My nails are sticky.' He feels higher on the fifth or sixth day after the 'traumatic occasion'. However the comfy existence lasts solely two extra days when it is time to have his nails clipped once more.
The reason of this phenomenon could be discovered within the analysis of Prof. Casanova. His comparative research of minicolumns within the brains of non-autistic and autistic people reveal that in non-autistic brains data is transmitted by way of the core of the minicolumn and is prevented from activating neighboring models by surrounding inhibitory fibres. In autism, as a result of minicolumns are so small and their quantity is so large, stimuli are not contained inside them however moderately overflow to adjoining models thus creating an amplifier impact. Inhibitory fibres simply don't deal with this movement. As an instance this phenomenon, Prof. Casanova compares inhibitory filters with shower curtain. When working correctly and totally protecting the tub, the shower curtain prevents water from spilling to the ground. In autism, 'water is everywhere in the bathroom'.
Bogdashina, O. (2003) Sensory Perceptual Points in Autism. London: Jessica Kingsley Publishers.
Casanova, M. (2006) 'Brains of the autistic people.' Worldwide AWARE On-Line Convention Papers. Obtainable at www.autism2006.org.