Tag: brain

Autism and Boredom

Greetings Earthlings! 🙂

This week I’d like to discuss a topic that many autists struggle with- boredom. We all know the feeling, that mental itch that makes you want to jump out of your skin, but for autists boredom can be so much worse.

Many autists, especially those with co-morbid ADHD, crave constant stimulation. As a result, boredom occurs more easily than neurotypicals. A simple lack of interest in a topic, if a task is too easy, or feeling overwhelmed can trigger boredom and autists will tune out fast. When this happens, it can lead to negative behaviours where an autist will act out and be destructive and disruptive, it might even trigger a meltdown in chronic scenarios (I have had this happen in work following months of tedious tasks🙈).

Boredom has always been a challenge for me. I constantly need to be working on something. In school I often got in trouble for reading/drawing/writing during class as I would get ahead of my work and need to keep my hands busy while waiting for the lesson to move forward. If anything they should have encouraged my habit for productivity in my downtime! 🤷‍♀️

But what does the science have to say?

As I’ve discussed previously, autists have higher levels of stimulating neurotransmitters and lower levels of calming neurotransmitters, so their neurons are firing excessively in the brain. When they aren’t able to channel this excess stimulation into something, boredom takes over which can lead to negative behaviours that cause problems. Autists also have dysregulated levels of the neurotransmitter dopamine- the chemical involved in motivation, pleasure and reward systems. When dopamine levels are low, motivation is low, so when an activity is not enjoyable, autists won’t have the brain power to engage and boredom will set in.

On another level, there have been reports from doctors claiming that FMRI scans of ADHD brains show that areas of the brain associated with pain light up when they experience boredom, suggesting that boredom might actually be a painful experience for neurodivergents. However, other neuroscientists have refuted this claim as the human pain response largely remains a mystery, so making this assumption from the data is a bit of a stretch.

Hope you enjoyed this post dear Earthlings!

Have a lovely weekend!

Aoife

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Autism and AI

Greetings Earthlings,

This week I’d like to discuss a bit of a hot button topic at the moment- Artificial intelligence (AI).

Once upon a time, AI used to mean that atrocious Steven Spielberg film, but now AI is creeping into our every day lives. Chat-bots, deepfakes, AI research models, advanced searches and content recommendations- we can’t escape it. The applications are seemingly limitless, with great potential for people with autism.

But first things first, what exactly is AI?

AI is the technology that enables computers and other digital devices to do the things that humans do like read, write, learn, talk, analyze etc. While not human, the combination of human-like abilities and machine thinking can make it a powerful tool to be reckoned with.

So how can we leverage AI when it comes to autism?

Now here’s where things get cool. Robots are being used to help manage autism! Researchers are training robots how to interact with children with autism so that autists can get practice identifying facial expressions and social cues and help them to learn how to respond appropriately. Robots are the ideal companions as they have limitless patience and allow autists to practice their skills in a safe, non-judgmental environment. There are also a number of new AI apps that similarly work to help autists to practice their social skills, with AI technology being used to help move and learn what works best for the autist and help suggest the right kind of calming exercises depending on their mood.

In addition, AI models can be used to study the MRI’s of autists to help us better understand the condition, particularly how neurological changes and autistic traits vary between neurodivergents.

Most recently new AI systems has been developed that can quickly and accurately diagnose autism- one system by measuring how water travels in the brain by analyzing MRI images; and another that detects autism by measuring responses to a flash of light in the eye. This could revolutionize how we diagnose autism, allowing autists to get access to services sooner for better overall outcomes. Other cool AI apps allow parents to upload videos of their child’s behaviours to be analyzed by clinicians for remote diagnosis using AI to help categorize and assess them.

On the other hand, AI is a force that we must be careful with. It has great potential for use, but we need to be careful where we tow the line. This is especially true of Elon Musk’s Neuralink- a computer chip that can be implanted in the human brain, allowing us to control mobile devices through the power of thought. This week saw the first reported successful (though the evidence remains to be seen) implant where the patient has recovered well and is able to control a mouse on a screen with their brain. What was once the stuff of science fiction is rapidly becoming a reality. Aside from these tech applications, Musk claimed in 2019 that Neuralink has untapped medical potential to help “solve” neurological diseases like Parkinson’s, Alzheimer’s, Schizophrenia and…. autism.

Now… this was naturally met with a lot of backlash from autism charities- especially given that Musk has openly discussed how his autism has contributed to his success. Autism is a different way of thinking, it is not something that the majority of autists would like to “solve”. New approaches to help autists navigate life in a neurotypical world yes, but most would not wish to get rid of their autism if given the choice. Would modifying autistic traits through AI really help autists, or could it make things worse by taking away our unique way of thinking?

It’s a very fine line we tread, so we must proceed optimistically with caution when applying AI to autism.

Hope you enjoyed (or were horrified by) this post dear Earthlings!

Have a lovely weekend!

Aoife

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Autism-Headaches & Migraines

Greetings Earthlings! 🙂

This week I’d like to talk about something that isn’t normally discussed in relation to autism- headaches and migraines.

Anyone can get headaches or migraines, but it appears that there is a link between autism and their frequency , with one study even suggesting that autistic children are twice as likely to experience migraines when compared with neurotypicals. Further studies are required to confirm comorbidity, but the studies that do exist suggest a lot of overlap.

So have they any idea why there is a link?

One of the most popular theories suggests that issues in sensory processing may make autists more susceptible to headaches and migraines. For both autists and migraine sufferers, differences in sensory processing can impair how the brain registers and modulates responses to sensory stimuli like light and sound which can trigger migraines following a sensory overload. There are a lot of structural changes in the brains of both autists and migraine patients which could further explain this sensitivity.

Research has also reported that autists have altered pain sensitivity which can distort their perception of headaches, so, what might be an ignorable ache in a neurotypical individual may be much more severe for an autist.

Interestingly, there may also be a link between headaches/migraines and our digestive health. The gut is innervated by a network of nerves known as the enteric nervous system, often nicknamed a second brain. Migraines are often co-morbid with gastrointestinal problems where issues in the second brain can influence changes in the main brain via the brain-gut axis. GI issues are frequently co-morbid with autism so this could be the most logical explanation for the link. I know I’ve certainly triggered migraines from eating things that didn’t agree with me, only to have the migraine immediately dissipate the minute my stomach hit the ejector button! 😂

Migraines have also been linked to low levels of serotonin in the brain. As previously discussed, serotonin levels are dysregulated in autists so this could also explain the link. This is particularly interesting as 95% of serotonin production occurs in the gut, so this further indicates a gut related link to headaches and migraines in autism.

Joint hypermobility could also be contributing to headaches. People with connective tissue disorders like Ehlers Danlos syndrome (EDS) frequently experience headaches. Weakness in supporting tissues like collagen can cause instability in the neck and spine which can pinch nerves, interrupting the flow of blood to the brain and triggering headaches and migraines. As joint hypermobility can be co-morbid with autism, this could further explain the link.

As with many aspects of the spectrum, susceptibility to headaches and migraines could also be genetic as there is an overlap in some genes linked to both autism and migraines.

Hope you enjoyed this post dear Earthlings!

Have a lovely weekend! 🙂

Aoife

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Autism and Auditory Processing Disorder (APD)

Greetings Earthlings! 🙂

Leading on from my previous post about autism and sound sensitivity, this week I’d like to take a look at auditory processing disorder or APD.

So what exactly is APD?

APD, also known as central auditory processing disorder (CAPD), is a condition where a person doesn’t fully process the sounds they are hearing. There is generally nothing wrong with your hearing ability, but a neurological issue in interpreting the meaning of that sound. People with APD often struggle to understand spoken instructions, sentences where they’ve missed words, thick accents, words that sound similar, and understanding conversations that place in noisy environments. For example, if someone said the word ‘dog’, you would hear the word perfectly, but might struggle to retrieve the meaning of the word.

So how is APD linked to autism?

APD’s are very common in autists, but the link is unclear. One of the leading theories however is that the hippocampus is immature and underdeveloped in the autistic brain. This part of the brain is responsible for processing auditory and other sensory information, so if the region is not properly developed, autists will struggle to process sensory input like sound. Other research suggests that autists are hearing and processing sound properly, however, they are processing this information at a slower level than their peers due to delayed development of the auditory cortex in the brain.

An interesting behavioural study proposed that autists are actually processing sounds correctly, however, they are choosing to not pay attention to certain sounds or speech due to variations in their attention span.

Some researchers have also linked difficulties in auditory processing to impairment and delays in language development in autism as the ability to process sound efficiently is critical to language formation.

To help autists struggling with APD to better process sound, it’s recommended that you:

  • Try to talk face to face
  • Avoid covering your face when speaking
  • Repeat or rephrase words if they are struggling
  • Reduce background noise in the environment
  • Avoid long and complicated sentences
  • Try not to speak too fast or too slow
  • Use pictures and text for younger autists

Hope you enjoyed this post dear Earthlings!

Have a lovely weekend! 🙂

Aoife

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Autism and Gene Mutation

Greetings Earthlings! 🙂

This week I’d like to discuss the influence of gene mutations in the development of autism.

So what exactly are gene mutations?

Gene mutations occur when the usual, expected gene structure changes to form a new gene variant that can be passed on to future generations. Mutations may include deletions (where part of the gene sequence is removed), insertions (where new information is added to the gene sequence), and rearrangements (where the gene sequence is reordered).

Autism is heavily influenced by our genes, with estimates suggesting that genetic factors contribute to as much as 40-80% of the risk of developing an ASD. Mutations in over 1000 genes have been linked to autism, but as of yet no single “autism gene” has been identified. To date, only 30% of autism cases can be explained by known gene mutations. Research has thus far explored a mere 2% of the genome for candidate genes, so there may yet be a common gene somewhere in the remaining 98%. The current thinking is that multiple small gene mutations interact to cause autism.

The following are some examples of candidate genes that have been linked to autism development:

  • ACTL6B– this gene is involved in the expression and control of many other genes in brain cells, where mutations to ACTL6B can alter these other genes to trigger autistic traits
  • Shank 3- is a leading autism candidate gene where mutations in this gene are found in 1-2% of autists. This gene expresses a protein that is essential to the proper functioning of the synapse (the junction) between neurons- a region where many autistic traits are linked to
  • PAX5- this gene encodes a factor that is important to the development of the brain during the embryonic phase of pregnancy, where mutations in the gene can lead to alterations in the brain that can contribute to neurodevelopmental disorders like autism

As interesting as genetic mutation is, it is largely considered to be a negative thing. Gene mutations are viewed as aberrant, something that many would seek to edit or correct- the entire premise of gene therapy. But while most are familiar with the concept of negative gene mutations, there are many gene mutations out there that are neutral or beneficial. For example, some people have a rare gene mutation called CCR5-delta 32 that makes you resistant to HIV infection, carriers for the gene mutation that causes sickle cell disease are resistant to malaria, and even rare mutations in the LRP5 gene can increase bone density to make your bones more resistant to breakage and age related degeneration.

In my own experience, I have a rare gene mutation that causes sectoral heterochromia- i.e. a section of my right eye is a different colour to my left eye. This mutation occurs in less than 1% of the population- made even rarer by the fact that my eyes are green (only 2% of people have green eyes). This is a neutral mutation- it’s a mutation, but not one that has any impact other than my friends find it really cool 😎

Genetic mutation is central to evolution, it’s how we grow and adapt; without it the human race would not exist. With this in mind, perhaps we need to refocus our perception of autism. We see autism genes as aberrant, but don’t consider the possibility that some of these mutations may be positive. Mutations that allow us to see the world differently, can make us think faster, have increased memory retention, give us unique creative and academic abilities etc. Perhaps a meltdown isn’t the product of a gene gone bad, but an evolved method of emotional processing (there really is great relief after a good meltdown cry- even if it isn’t the most fun in the middle of it all 😛 ).

Maybe the genes aren’t aberrant, perhaps it’s just our perception of them that we need to change.

Hope you enjoyed this post dear Earthlings!

Have a lovely weekend!

Aoife

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Autism and Dyscalculia

Greetings Earthlings! 🙂

Leading on from my previous post on dyslexia, this week I’d like to discuss another lesser known learning disability that can be co-morbid with autism- dyscalculia.

So what exactly is dyscalculia?

Dyscalculia is a specific type of learning disability characterized by a difficulty with numbers and arithmetic i.e, understanding how to do maths and manipulate numbers (that’s right- not all autists are good with numbers Hollywood 😛 ) . There are varying levels of dyscalculia but signs may include difficulties with numbers and mathematical symbols, pattern recognition, sequence issues, handling money, managing and telling time, visual processing, and memory issues.

So what causes dyscalculia?

Again as with most aspects of the spectrum, the exact mechanism is unclear. Thought to be related to ADHD, dyslexia and dyspraxia, dyscalculia seems to result from dysfunction in the intraparietal sulcus (an area thought to be involved in processing symbolic and numerical information) and the frontal lobe of the brain. The frontal lobe in particular contains most of the dopamine neurons of the brain which are involved in attention, planning and short term memory- all of which are important functions in comprehending numbers. As discussed in many previous posts, dopamine levels are dysregulated in the autistic brain which could explain why autists may be more prone to these types of learning disabilities.

Is there anything that can be done to help manage it?

As with most disabilities, early detection and intervention are key to helping those with dyscalculia cope with their struggles. There have been very few targeted programs specific to dyscalculia but in recent years a number of digital programs have been created to help improve basic numerical abilities. The gold standard one to one tutoring is also a useful option to help improve these skills through repetition and targeting areas of particular difficulty. Interestingly, there was a study conducted in 2014 where electrical stimulation of the left side of the posterior parietal lobe of the brain (an area involved in spatial reasoning and planned movements) improved numerical abilities in patients. As many as 43% of autists may have abnormalities in their parietal lobe, so further research into this region could provide us with new ways to manage dyscalculia in the future.

Hope you enjoyed this post dear Earthlings!

Have a lovely weekend! 🙂

Aoife

1

Autism and Dyslexia

Greetings Earthlings! 🙂

This week I’d like to take a look at another neurological condition that can be co-morbid with autism- dyslexia.

First things first, what is dyslexia?

Dyslexia can be described as a specific type of learning disability that impacts a persons reading, writing and spelling abilities. Impacting approximately 10% of the population, dyslexia ranges from mild to severe characterized by cognitive difficulties with processing phonetics, working memory and speed of long term memory retrieval. Like autism, the exact neurological causes and mechanisms are unclear, but as dyslexia can run in families, genetic factors are largely thought to contribute.

So how is it linked to autism?

The link between autism and dyslexia has not been scientifically established, but there are some commonalities. Interestingly, dyslexia overlaps with many autistic co-morbidities such as ADHD, dysgraphia, dyspraxia (an estimated 52-53% of dyslexics are also dyspraxic), and auditory processing disorders, which would suggest that these conditions likely operate through similar neurological mechanisms and pathways.

Scientists have found it difficult to establish a direct genetic link between the two conditions, however, recent research may implicate gene deletions in CNTNAP5 (a gene involved in connecting neurons)  and DOCK4 (a gene that regulates junctions between cells) in both dyslexia and autism. In addition to this, a 2015 study found that declarative memory (the type of memory that can be “declared” like names, facts, figures etc.) can be used to develop coping mechanisms for both autism and dyslexia, suggesting that perhaps there may be overlap in the brain regions associated with this type of memory formation. Other studies exploring the neural mechanisms of dyslexia indicate structural changes in such regions as the frontal lobe (memory and problem solving), cerebellum (the motor centre) and corpus callosum (the bundle of nerves that splits and connects the left and right hemispheres of the brain)- all areas that have also shown structural changes in studies of the autistic brain.

Most recently, a 2021 study exploring the co-occurrence of dyslexia and other neurodevelopmental disorders reported that many dyslexic patients in their dataset also had issues with sensory processing and other ASD traits, but concluded that the links between the two conditions are complex and hard to underpin, especially given that some autists are hyperlexic (guilty!) rather than dyslexic.

Whilst there is no definitive scientific link, the overlap cannot be denied.

Hope you enjoyed this post dear Earthlings! 🙂

Have a lovely weekend!

Aoife

5

Autism and Brain Zaps

Greetings Earthlings! 🙂

Leading on from my previous post about autism and anxiety, this week I’d like to talk about the phenomenon of brain zaps which autists may experience.

So what exactly are brain zaps?

Brain zaps (also know as brain shakes/shocks/shivers/flips) are a poorly understood phenomenon where it feels as though the brain is undergoing an electrical shock or a shaking/shivering/vibrating sensation. I personally have experienced these from time to time as a vibrating sensation in my brain, where it feels like your brain is literally shaking in your skull. Others report that it feels like a zap has gone off in their head and they can hear a hissing or a ringing sound in their ears. In some cases people experience bursts of light and can feel faint and disorientated afterwards. They are not harmful to the brain but they can be distracting and uncomfortable, especially for autists who are already sensitive to sensory stimuli.

So what causes them?

Like many neurological sensations, they are somewhat of a mystery, but they generally tend to occur in response to withdrawal or missed doses of certain drugs such as anti-depressants, ecstasy and MDMA, and medications for anxiety and ADHD – many of which are prescribed for co-morbid mental health conditions in autists. As these drugs alter levels of key calming inhibitory neurotransmitters such as serotonin and GABA (levels which are naturally dysregulated in the autistic brain), it is thought that low levels of these neurotransmitters may cause over-excitement in the brain, leading to abnormal firing between the neurons causing localized minor seizures i.e. brain zaps.

Don’t be alarmed by the term seizure here- this theory has not yet been confirmed and there is no evidence that brain zaps have a negative impact on our health.

On the other hand, brain zaps can also occur in response to high stress and anxiety. When you experience chronic stress, the brain is hyperstimulated as your worries swirl round and around in your restless mind. Completely overworked and overexcited from stress, your neurotransmitter levels fluctuate causing lower levels of calming GABA and higher levels of glutamate- the primary excitatory neurotransmitter. Such changes may over-excite the brain resulting in a localised seizure/brain zap as described above. Autists may be particularly susceptible to brain zaps in this manner as we experience higher levels of biological stress than our neurotypical peers, not to mention that our neurons are naturally hyper-connected, our neurotransmitters dysregulated and our brains hyperstimulated as a result.

Interestingly, a recent study has suggested that lateral eye movement may be a triggering factor for brain zaps. This is particularly intriguing for autists as evidence suggests that we process most visual information in our periphery, so our natural inclination to avoid direct eye contact could trigger brain zaps.

There are no treatments for brain zaps, but while they may not be the most pleasant sensation, they are generally nothing to be worried about and can be mitigated with proper management of stress and your prescribed medications.

Hope you enjoyed this post dear Earthlings! 🙂

Have a lovely weekend!

Aoife

1

Autism and Cholesterol

Greetings Earthlings! 🙂

Following on from my recent post about diet and autism, this week I’d like to discuss a biomolecule that is not often talked about in the literature about autism- cholesterol.

When it comes to cholesterol, we usually think of it as a bad thing- that fatty yellow stuff that clogs up our arteries when we eat too much of the wrong foods. But there is so much more to cholesterol than most people realize. Cholesterol is an essential biomolecule involved in the synthesis of numerous other bodily substances such as steroid hormones, vitamin D and bile. It’s also an essential component of our cell membranes.

There are 2 types of cholesterol- LDL and HDL. LDL (low-density lipoprotein) makes up most of the cholesterol in the body. This is often referred to as the bad type of cholesterol as a build up of this can clog the arteries. HDL (high-density lipoprotein) on the other hand, is considered the good kind of cholesterol as it absorbs waste cholesterol and shuttles it to the liver for removal from the body.

So what has cholesterol got to do with autism?

Here’s where things get interesting. Cholesterol is involved in modulating the oxytocin receptor and the serotonin 1-A receptor- neurotransmitters that are dysregulated in the autistic brain which contribute to a number of autistic symptoms. Multiple studies have reported that some autists have hypocholesterolemia (i.e low cholesterol levels). Cholesterol deficits could interfere with the functioning of the oxytocin and serotonin receptors and contribute to autistic symptoms. Recent research has identified mutations in a cluster of genes involved in cholesterol metabolism in certain forms of autism which likely causes these lowered cholesterol levels. Cholesterol and omega fish oil supplementation may be useful to help counter the impact of low cholesterol on the brain.

Cholesterol Fat The Structural - Free image on Pixabay

Hope you enjoyed this post dear Earthlings! 🙂

Have a lovely weekend!

Aoife

0

Autism and MDMA/Ecstasy

Greetings Earthlings! 🙂

Leading on from my previous post about autism and CBD, this week I’d like to explore another drug that is being researched in the treatment of autism- MDMA, the active ingredient in Ecstasy.

Yes, you’ve heard me correctly, the psychoactive drug MDMA is indeed being explored as a treatment option for autists!

So how can a recreational party drug help people with autism?

First synthesized for use in psychotherapy by Merck in the 1910’s, MDMA is the active ingredient in the street drug ecstasy and is thought to improve anxiety, sensory perception and sociability in those who take it. Many autists who have taken the drug recreationally have reported feeling more at ease in their body and increased empathy.

So how does the drug work?

MDMA increases release of neurotransmitters such as serotonin, noradrenaline and dopamine in the brain- neurotransmitters that are dysregulated in the autistic brain. In addition, MDMA is also thought to boost the hormones oxytocin and vasopressin the body which are also implicated in autistic symptoms. These hormones and neurotransmitters are heavily involved in anxiety and social behaviours, so targeting these makes pharmacological sense for autists.

That’s fine in theory, but does it work?

A pilot study (a small scale preliminary study) was conducted in 2016 to compare the impact of MDMA assisted psychotherapy on anxiety levels in autists versus psychotherapy alone. The study found that social anxiety significantly reduced in the group that received MDMA, a positive change that occurred rapidly and show signs of long term duration. This was however only a small pilot study and studies are ongoing with larger cohorts.

The drug does not currently have any legally approved medical uses, but if these clinical trials prove successful, this may change in the coming years.

In case you’re getting worried, the street drug itself is not being explored- ecstasy does not contain enough MDMA for therapeutic benefit, and it is often combined with other substances such as methamphetamine which make long-term use highly addictive and damaging to overall health. However, long-term use of MDMA does hold similar safety caveats such as sleep disturbances, depression, heart disease, decreased cognitive functioning and concentration so further research is required.

Nearly half of people who regularly consume ecstasy have tested their drugs

Hope you enjoyed this post dear Earthlings! 😀

Have a lovely weekend!

Aoife

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