What Parts of the Brain Does Autism Affect?

What Parts of the Brain Does Autism Affect?


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    What parts of the Brain does autism affect are still being studied. By understanding what parts of the brain are impacted by autism, you can develop better treatments and strategies for those with the disorder. With this information in hand, you’ll be better equipped to help your patients and loved ones feel supported and understood.

    What Parts of the Brain Does Autism Affect?

    What Parts of the Brain Does Autism Affect? Studies indicate the cerebellum is the one region or part of the brain that is most affected by the presence of autism.

    Some common areas affected are the amygdala, which is responsible for processing emotions, and the hippocampus, which is responsible for memory. Other parts of the brain that are contrived by autism include the nucleus accumbens, frontal cortex, and temporal cortex.

    As per the study, the neurons in which the protein RNF8 was absent, formed 50% more synapses, which are the connections that permit the exchange of signals between the neurons, as compared to the people having the RNF8 gene.

    How are autistic people’s brains different?

    Autism research suggests the autism traits associated with people with autism arise as a result of the alterations in the way the brain structures and brain regions connect with one another.

    It has come under the discovery of scientists that between the brain cells of people with autism, there exists a misfiring in communication. As a result, the nerve cells do not work well enough to regulate body functions to work well enough.

    The neuroscientist Nancy Knwisher has tried to explain the brain structure of an autistic person and has found evidence as per the autism research that she explains in this Youtube video:

    Characteristic autistic brain structure:

    Studies reveal that there is no characteristic structure of brains with autism revealed till now. This means that there is no specific brain structure for people with autism.

    Imaging results show that there are differences in brain growth and brain structure of people with autism. This means that the results show a great variety of brain structures in autistic children whose brains are scanned.

    What is the difference between a normal brain and an autistic brain?

    While doing their research on autistic people and normal people and comparing the results, the researchers found out the people who show autism traits have significant differences in the brain structure and patterns as compared to normal people.

    The lead researcher Jan Buitelaar indicated that the study entailed the MRI scans from 1571 autistic people with 1651 controls, aged 2 to 64 years. These scans came from 49 sites, including 13 countries.

    Temporal cortex:

    This study found out the brain of autistic people holds a slightly thinner temporal cortex, which is a large region of the brain that is linked with the processing of sounds and speech.

    Frontal cortex:

    The study indicated that the autistic people participating in the study had a thicker frontal cortex as compared to normal people. This is the region that performs the task of governing complex social and cognitive processes.

    Nucleus Accumbens & Amygdala:

    The study found out that Nucleus Accumbus, known as the reward region, and the amygdala, known as the emotional center was small in autistic people than in the people in the control group.

    What happens in the brains with autism?

    What happens in the brains with autism? Brains with autism show less coordination of activities, but whether the individual brain regions in people with autism also work differently, is unclear.

    A comparison was done to compare the brain activity of people with autism and normal brains using the brain scanner. Results showed that both groups showed similar patterns in increasing and decreasing activities of the networks of brain regions.

    The brains of autistic people process the information in a different way than the brain of a neurotypical person.

    But, the differences were revealed in the sensory areas of the brain which showed more random activity than the normal brain. The amplitude of this random activity increased with the severity of the autism level in people.

    All in all, this study suggested that the changes in the activities and structure of small brain regions give rise to complex autism symptoms and symptom severity. These changes are directly linked with autism and how autism processes and changes the brain regions.

    How does autism impact the brain?

    According to a brain tissue study conducted by a group of scientists and the resulting evidence, the children that get affected by autism have a surplus or more than required brain connections or synapses.

    This defect happens because of the slowdown in the process of normal pruning of the brain during the development of the brain in the mother’s womb. About half of these cortical synapses are disappeared by pruning by late adolescence.

    Autism impacts the brain regions associated with emotions, social and cognition skills, motor skills, and brain-body coordination.

    For more insights on the impacts of autism on one’s brain, watch this YouTube video by the American Museum of Natural History.

    Does autism affect brain development?

    Researchers performed studies on a group and evidence suggests that autism tend to affect the brain development of individuals. Research suggests that the defects in the growth of the brain related to genetics may cause the abnormal development of the brain of autistic patients.

    Autistic people were studied by the researchers and as per several studies, they discovered some irregularities in the structure of the brains with autism themselves. This included the irregularities in the corpus callosum, which does the task the facilitating the communications of the two hemispheres of the brain.

    Researchers also found irregularities in the cerebellum which perform the task of getting involved in the balance of body, motor activities, and coordination between different parts of the body.

    Other than that, researchers also found out that the development of autism causes irregularities in the amygdala, which performs the task of affecting the social behavior and emotions associated with a person.

    Other than that, recent studies indicate that the brain connections, that are the basis of the coordination of directions within the brain, also receive an effect during the development of a child who is diagnosed with autism.

    Expansion of the cortex:

    Autism research indicates that individuals with autism who have been diagnosed in their late childhood show some unusual and fast brain growth in certain regions of the brain. Between 6 to 12 months of age, these children have a notably faster expansion of the surface area of their cortex.

    Research suggests that the brain volume of individuals with autism increases at a faster face in their second year after birth as compared to the non-autistic individual.

    Big brain size and white matter:

    While studies were conducted by the researchers on the effects of autism on brain development, they got some surprising findings.

    These studies provide some clues about the types of autism and the brain structure. This research included the linkage between brain size and white matter.

    One of the white matter tracts – called corpus callosum- was found absent in people who had an increased chance of developing autism. For the inference of the structure of white matter, researchers used the technique of diffusion MRI. This technique is used for the measurement of water flow throughout the brain.

    Target population:

    The studies started with the diagnosis in children, also involving psychiatry of tracking the developments of the brain in the individuals till they reach adolescence. They tracked the development of the brain of children from the age of 3 to 12 years, using the brain scan results.

    The research involved 1000 MRI scans on 400 children, spanning over the period of 15 years of the long and extensive amount of research after the diagnosis in children.

    For more insights into their findings, watch this video by UC Davis Mind Institute on YouTube.

    What is Autism?

    What is Autism? Autism spectrum disorder is a complex and lifelong developmental disorder that affects social interactions skills, intellectual disability, communication skills, and self-regulation. It causes restrictive interests and repetitive behaviors and creates challenges in the everyday life of individuals with autism.

    Autism comes under the category of neurodevelopmental disorders that causes delays in the development of the brain, which starts affecting an autistic person from early childhood. It is normally diagnosed in childhood and causes difficulties in many areas of life.

    The number of cases:

    According to a survey, almost 70M people around the world, or 1% of the world population has autism which has major impacts on a person’s life.

    The sex differences can be observed in the number of cases reported. The number of cases in males are five times more than the females. These sex differences in the frequency of cases can be regarded to several factors, like less diagnosis and coping skills in females.

    Revised classification:

    Revising its classification in 2013, American Psychiatric Association merged the Classic Autism, Pervasive Developmental Disorder (PDD), and Asperger’s Syndrome under one general category of Autism Spectrum Disorders.

    Regarding its causes, there are multiple factors involved in the development of autism. These include the genetic and nongenetic factors, together with the environmental factors.

    Associated symptoms:

    There are certain autistic symptoms associated with the brains with autism in terms of social interaction, communication skills, intellectual disability, and restrictive and repetitive behaviors.

    The symptoms begin early in children like lacking the ability of eye contact, difficulties in expression and understanding of feelings, and repeated phrases.

    Can you see autism on a brain scan?

    The simple answer is yes. Studies have devised methods to identify the presence of autism in a brain using MRI. The brain scans created by MRI devise some measurements known as ‘biomarker’ that can be used to indicate the presence of autism in a brain.

    The computer algorithm and the measurements used to create the brain scan were found out to be 85% accurate in results, helping to identify the presence of autism in adults.

    Wrapping Up What Parts of the Brain Does Autism Affect?

    This article is meant to guide the reader about the significant aspects of brains with autism. The brain of an autistic person differs in a lot of ways from the brain of a normal person in terms of structure, functioning, connections, and performance.

    A wide range of studies has been performed on the brain structures and the research has been continuously moving ahead to get more insights into the structures of brains with autism and their impacts on the life of an autistic individual.

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