Our bodies and brains are extraordinary, working together in harmony to help us navigate the world around us. Have you ever thought about how your brain creates a mental map of your body? It might sound strange, but this internal blueprint, known as the "body schema," plays a crucial role in how we interact with the world around us. For many autistics, this mental map can be a bit more complex, leading to challenges in motor coordination, body awareness, and proprioception - the sense of our body's position in space.
What is Body Schema?
To put it simply, body schema is like a GPS system inside our brains. It constantly tracks the position of different body parts and their movements, allowing us to perform everyday tasks with ease. Think of it as an internal representation that guides our physical actions, helping us walk, talk, and even dance without consciously thinking about every single movement.
Autism and Body Schema: Unraveling the Connection
Researchers have uncovered a wealth of evidence indicating that autistics may experience unique challenges with their body schema. This could manifest in various ways, affecting their motor coordination, proprioceptive feedback, and overall body awareness. But how exactly do we know this?
Insights from Brain Scans: In a study by Haswell et al. (2009), functional magnetic resonance imaging (fMRI) was used to observe the brains of autistic children. The researchers discovered differences in the internal model of action, a critical component of body schema related to the outcomes of motor actions. These differences in the motor system could be connected to the social and communication deficits often seen in autism.
Touch and Proprioception in Autism: Cascio et al. (2012) found that autistics might process touch and proprioception differently compared to neurotypical individuals. Proprioception refers to our sense of our body's position in space, and differences in how it is perceived could impact the development and maintenance of an accurate body schema in people with autism.
The Mystery of "Motor Noise": Another study by Izawa et al. (2012) shed light on the phenomenon of "motor noise" in autistics. Motor noise refers to inconsistent and uncontrolled movements, which could suggest disruptions in the body schema. This finding highlights a possible link between motor difficulties and the challenges in social communication often experienced by autistics.
Motor Difficulties and Proprioceptive Feedback: Whyatt and Craig (2013) conducted research that revealed children with autism faced greater difficulties in motor tasks that required proprioceptive feedback compared to neurotypical children. This points to a potential challenges in their body schema, further supporting the correlation between autism and challenges with body representation.
Implications and Hope for the Future: As our understanding of body schema and its connection to autism deepens, there is also hope for potential therapeutic interventions and supports. The emerging field of haptic technologies - technologies that engage our sense of touch - could hold promise in aiding individuals with autism to develop a more robust and accurate body schema.
References:
Haswell, C. C., Izawa, J., Dowell, L. R., Mostofsky, S. H., & Shadmehr, R. (2009). Representation of internal models of action in the autistic brain. Nature Neuroscience, 12(8), 970–972. https://doi.org/10.1038/nn.2356.
Cascio, C. J., Foss-Feig, J. H., Burnette, C. P., Heacock, J. L., & Cosby, A. A. (2012). The rubber hand illusion in children with autism spectrum disorders: Delayed influence of combined tactile and visual input on proprioception. Autism, 16(4), 406-419. https://doi.org/10.1177/1362361311430404.
Izawa, J., Pekny, S. E., Marko, M. K., Haswell, C. C., Shadmehr, R., & Mostofsky, S. H. (2012). Motor learning relies on integrated sensory inputs in ADHD, but over-selectively on proprioception in autism spectrum conditions. Autism Research, 5(2), 124-136. https://doi.org/10.1002/aur.1222.
Whyatt, C., & Craig, C. (2013). Sensory-motor problems in Autism. Frontiers in Integrative Neuroscience, 7, 51. https://doi.org/10.3389/fnint.2013.00051.
Cascio, C. J., Foss-Feig, J. H., Burnette, C. P., Heacock, J. L., & Cosby, A. A. (2012). The rubber hand illusion in children with autism spectrum disorders: Delayed influence of combined tactile and visual input on proprioception. Autism, 16(4), 406-419. https://doi.org/10.1177/1362361311430404.
Izawa, J., Pekny, S. E., Marko, M. K., Haswell, C. C., Shadmehr, R., & Mostofsky, S. H. (2012). Motor learning relies on integrated sensory inputs in ADHD, but over-selectively on proprioception in autism spectrum conditions. Autism Research, 5(2), 124-136. https://doi.org/10.1002/aur.1222.
Whyatt, C., & Craig, C. (2013). Sensory-motor problems in Autism. Frontiers in Integrative Neuroscience, 7, 51. https://doi.org/10.3389/fnint.2013.00051.