How your Brain sees your Body

The Sensory and Motor Homunculus Men
The Sensory and Motor Homunculus Men

What is the deal with these weird looking figures? Why are they proportioned the way they are? Why the giant hands? And the oversized mouths? And what does it have to do with our brain? Lets investigate…

These figures are called the Sensory and Motor Homonculus Men. They are proportioned like this to illustrate how much of the sensory cortex and the motor cortex is devoted to sensing and moving the different areas of the body. So the hands and mouth are oversized because large areas of the brain are given over to operating the hands and mouth.

The Sensory Motor Cortex (below) is the part of your brain that deals with sensing (sensory) and moving (motor) your muscles.

SMA Brain Diagram
The Sensory Motor Cortex

Different areas of the sensory motor cortex are responsible for sensing and moving different parts of your body. The diagram below is called a sensory motor homunculus, it maps out which parts of the sensory motor cortex sense and move which body parts. The sensory homunculus (blue) receives information from the muscles regarding muscle tension/length, joint angles, load etc. The motor homunculus (red) sends motor commands back to the relevant muscles based on the aforementioned sensory information.

Sensory Motor Homunculus Map

The commands from the motor cortex are a signal to the muscles to either increase the level of tension (contract), reduce the level of tension (relax) or maintain the level of tension. This back and forth of information, from the brain to the muscles, creates a sensory motor feedback loop. Sensory input arrives from the muscles into the sensory cortex > motor impluses exits the motor cortex and go back to the muscles > sensory input in > motor impulses out… and round and round it goes.

As you can see from the image above, your hands and face/mouth/tongue take up a huge part of both the sensory cortex and the motor cortex. Physically they may be small but neurologically they are massive. This makes sense when you begin to consider a) the many, many ways which we can use our hands and the very fine control we have over them and b) the fine control of the mouth, tongue and larynx that is required to speak.

Handwriting for example, requires a huge amount of brain processing power to be executed correctly. Perhaps that is why learning to write is such a laborious process. Writing, drawing, painting, playing an instrument, carving, pottery, sculpting all these activites require great skill and sensorimotor control of the hands. So to do any sort of fine work with the hands is to use and stimulate large portions of the sensory motor cortex of the brain. This suggests that the old saying “to be good with your hands” should maybe be understood as “to be good with your brain.” A point that is well illustrated in this interesting article that asks “Why does writing make us smarter?”

Interestingly the advent of computers, smartphones and touch screens has led to a sharp decline in real world hands-on skills being practiced. Now we seem to do everything virtually, on a computer screen. We have begun to use our hands mostly to tap keys and swipe screens, and in doing so we have reduced somewhat, the amount of stimulation that the sensory motor cortex receives. If we are not using our hands to their full potential, then maybe we are not using our brains to their full potential. I wonder what the long term implications of this will be on us and our society? As the old saying goes “Use it or lose it”. Only time will tell.

But for now let’s get back to the sensory motor cortex. As noted previously, another very large portion, approximately one third of the sensory motor cortex, is devoted to the sensing and controlling of the face, mouth, lips, tongue and larynx. Again this makes sense when we consider that as humans we speak. Speech requires a great deal of brain power to orchestrate. The lips, tongue and larnyx have to coordinate with our diaphragm in order to deliver intelligible speech or in a further refinement, to sing.

So with one third of the sensory motor cortex dedicated to the hands and another one third of the sensory motor cortex dedicated to the face/mouth/lips/tongue/larynx, there is only one third left. Just one single third of your sensory motor cortex devoted to the largest parts of the body! Your trunk, spine, hips, shoulders and limbs.

That is comparatively a very small section of the sensory motor cortex that is responsible for sensing and moving a very large area of the body.  Is it any wonder then, that the areas of our bodies that have the least cortical (brain) representation are the same areas that are most susceptible to movement deficits and muscular pain? Back pain, hip pain, shoulder pain anyone?

The trunk, hips, shoulders, and neck are supported by a very small section of the cortex. This means less processing power for a large area of the body. This being the case it would make sense that we might have to spend a little more time maintaining our brains control over these parts of our body, making sure the modest amount of the sensory motor cortex that is apportioned to these areas is stimulated regularly.

Movement of all and any kind provides massive amounts of stimulation and sensory information to the brain. We traditionally think of information as purely intellectual, words, numbers, facts, data etc. But for your sensory motor cortex, MOVEMENT IS INFORMATION. And the more information your brain has about your body, the better you can sense and organise your movement.

So how can we help ourselves in this regard? A Somatic movement practice is a great place to start. Practicing somatic movements slowly and smoothly allows us to re-establish, maintain and refine our sensory awareness and our motor control. By relearning how to move our trunk and spine comfortably through their normal and natural ranges of motion. Then when basic control has been re-established, we can get on with enjoying our favourite acvtivities whatever they may be. (Running, walking, lifting, climbing, dancing, yoga, gardening, tennis, the options are endless).

You can start learning how to do all this right now by checking out the Learn Somatics YouTube Channel. If you’d like some help with a particular movement or muscular pain I offer online 1-1s via Zoom. No matter where you are in the world, it’s never been easier to Learn Somatics. So take advantage today.

As always thanks for reading.

learnsomatics.ie

Is your Movement Account Overdrawn?

Pay attention…

Isn’t it interesting that we must PAY attention? The very notion that we PAY attention suggests that in return for paying attention we might receive something. What might the payment of attention garner in return?

Awareness? Information? Knowledge?

In the case of Somatics in return for the paying of attention to the internal sensations of your own movement you receive rich sensory information or feedback from the sense receptors within your muscles. You receive more awareness of what muscles are tight and stiff and which muscles are free and relaxed. You receive an opportunity to voluntarily relax and lengthen stiff, tight muscles. And when you pay attention to carefully and slowly relaxing and lengthening your stiff, tight muscles you receive more comfort and more freedom of movement.

And what happens if you never pay attention to sensory receptors within your muscles, or never pay attention to your ability to move? Your ability to move is taken away, little by little until one day you realise that your movement account is empty, or worse still overdrawn.

A daily Somatics practice gives you an opportunity to pay your attention dollars into your movement bank account. This will accumulate over time into a surplus of movement potential. Then when you need to withdraw from your movement account you will have plenty of movement credit (ability to move freely and without pain).

Start investing today!

The Somatic Exercise below allows you to pay attention to your back muscles and learn how to relase and relax them quickly and easily…

Arch & Flatten – Martha Peterson

~

www.learnsomatics.ie

 

It’s Never Just One Muscle

Often, when we have pain, there is a perception that there is one particular muscle that is causing the problem. Such as, “Oh its my psoas/piriformis/hamstring” etc. And while that may be where you feel the pain or restriction, it is not necessarily where the problem is.

Muscle never work in isolation, they can’t. In order for one muscle to contract, another, opposing muscle must relax, this immediately means you have another muscle brought into play. Muscles work in groups and fire in patterns of contraction to facilitate movement. So a sore or tight psoas/piriformis/hamstring is really just one part of a much bigger habituated involuntary full body pattern of contraction. In Somatic Education we call this Sensory Motor Amnesia.

The Three Reflexes we work with in Somatic Education; Green Light Reflex, Red Light Reflex and Trauma Reflex, are examples of universal full body patterns of muscular contraction. These reflexes are common to all creatures with a spine and nervous system so it is important to be able to recognise them in yourself.

hamstring runnerIt’s that pesky hamstring again! Or is it?

From a Somatics perspective, we look for the connection between the problem/pain area and the three Reflexes mentioned above. For example tight/sore hip flexors, could be as a result of habituated Red Light Reflex. If it is only the hip flexors on one side, or perhaps the piriformis on one side, it may suggest a Trauma Reflex. A chronically tight and painful lower back can be caused by habituated Green Light Reflex. In order to address problems like these you must first relax the muscles of the relevant reflex and then improve the functioning of the entire movement system. As a living, breathing, conscious Soma* you are a SYSTEM OF MOVEMENT. Movement dysfunctions must be addressed by looking at that system in its entirety and improving its functioning in its entirety.

How is this done? Well, first we look at posture for signs of habituation of the Three Reflexes. Usually all are present to some degree. In that case which one is most dominant? What way is the brain and nervous system holding the body? Looking at the entire system.

We watch the client walking. What parts of the body move freely, which parts of the body do not move freely? Which side bears more weight? Again, we are looking at the entire system.

Then we palpate, that is we feel the tonus or hardness of the muscles, both standing and on the plinth/worktable. Are they tight? Which ones are tight? Which ones are soft? What is the relationship between them? What changes in the tonus from standing to laying down? Where is the Sensory Motor Amnesia (SMA)? Again looking at the entire system.

Then we decide which reflex to address first based on our observations. With that decision made we educate the client through gentle guided movement patterns and full body pandiculations. They learn how to sense the Three Reflexes (see links above), these universal full body patterns of contraction. How to recognize them, how to contract into them VOLUNTARILY and more importantly, how to RELAX out of them VOLUNTARILY.

Working in this way, by educating the client, allows for systemic improvements in movement, comfort and pain reduction. Because clients learn how to do these movements for themselves, they can repeat the process at any time by themselves. Thus becoming more self aware, self correcting and independent.

So with all that said. Do you have a muscle that seems to be tight or sore? If so, explore your movement a little further. Which parts of your body move freely and comfortably? Which parts do not move freely and comfortably? With a little investigation you may find that it is never just one muscle.

*Soma: the body experienced from within

Learn Somatics online with me, check out my online learning options here!

Or checkout the Learn Somatics YouTube Channel to start learning right away.

As always thanks for reading.

www.learnsomatics.ie

Neck and Shoulder Pain and The Red Light Reflex

How does The Red Light Reflex cause, neck pain, shoulder pain, back pain, problems in the arms and wrists , shallow breathing and poor posture?

Red Light Reflex is an habituated and ongoing tightening of all the muscles of the front of the body. When you forget how to relax and lengthen the muscles of the front of the body you can develop many problems over time. In Clinical Somatic Education we call this inability to release and relax muscles Sensory Motor Amnesia (SMA). With Red Light Reflex the main muscles involved are the muscles of the belly (Abdominals), chest (pectorali major and minor), shoulders (upper trapezius) and inner thighs (adductors). So how does involuntary chronic tightness in these muscles lead to pain and poor movement?

Stickman_Template_Red_Light

Neutral posture (left), and a typical Red Light posture (right)

 

Some points to notice, in the figure on the right.

  1. The forward curving of the spine
  2. The change in angle of the rib cage and pelvis due to the tightening of the belly and chest muscles
  3. The drawing together of the rib cage and pelvis due to the tightening of the belly muscles
  4. The corresponding forward position of the head and the shoulders as a result
  5. The bending of the legs and arms
  6. The reduction in true height as a result of the spinal curve

 

Back Pain
As you can see from the image above Red Light Reflex causes a curving forward of the spine. This creates a situation where the back muscles are always lengthened but at the same time working hard to keep you upright in gravity and maintain your head position. This constant workload creates sore, tired back muscles and leads to pain in the mid and upper back.

Birds-Eye-Red-Light

Neutral posture, absence of Red Light Reflex >>>>> Red Light Reflex

 

Some points to notice, in the figure on the right.

  1. The sunken chest, rounded back and shoulders forward
  2. The head pulled forward of the centre line

 

Neck and shoulder Pain
When the belly, chest and frontal neck muscles are tight making the spine curve forward, they draw the head and shoulders forward too (refer to images above), creating a rounded back and stooped posture. This makes it difficult to stand up “straight”. The constant forward and shrugged position of the shoulders can also cause discomfort and pain whilst limiting your ability to turn your head left or right and also to raise you arms straight overhead. The shoulders must rest in a neutral position in order for the neck and arms (and in turn the elbows and wrists) to move freely and function properly. When the shoulders and head are constantly drawn forward this reduces the amount of space internally in the front of the chest and neck. This means less space for all the nerves and blood vessels which innervate the shoulders and arms. When these nerves and blood vessels are compressed or inhibited it leads to problems in the…

Arms, Elbows, Wrists and Hands
Problems in the arms, elbows, wrists and hands are also often due to habituated Red Light Reflex. The brachial plexus, which is the main nerve that innervates the (upper limbs) arms runs between the scalene muscles of the neck, through the area behind the collar bone and just behind the attachment of pec minor (small blue chest muscle in image below) towards the armpit. When the chest and neck muscles are habitually contracted, as is the case with Red Light Reflex, they can compress the brachial plexus causing; Thoracic Outlet Syndrome, tingling and numbness in the arms and hands, weakened grip, carpal tunnel syndrome, cold hands etc. This is yet another example of tightness in the centre of the body leading to problems at the extremities.

Breathing
You can also see in the image below the intercostals, these are the muscles that are found in between each of the ribs. In Red Light Reflex these muscles will also be habitually contracted to some degree. As you can imagine, if these muscles cannot relax fully your ability to breathe deeply is reduced. In this situation the ribs are no longer free to expand making space for the expanding lungs. As a response to this we begin to chest breathe which adds further fatigue and tightness to the muscles of the chest, neck and shoulders. Chest breathing is inefficient and can cause systemic low level anxiety and fatigue due to insufficient oxygen intake. Belly breathing in contrast is efficient and helps you feel relaxed and energised. Belly breathing is only possible when we are able to let our abdominals and intercostals (between the ribs) relax and lengthen. The image below highlights the chest muscles (pectoralis major and minor) and the abdominals for clarity.

 

Chest_Abs_Highlighted

Right side Pectoralis Major , Left side Pectoralis Minor and Abdominals highlighted in blue

 

As you can see Red Light Reflex can contribute to a myriad of complaints. The good news is it is relatively straight forward to release and relax all the muscles of the Red Light Reflex using safe simple Somatic Exercises or through Clinical Hands On Lessons. Through Somatics you will learn how to recreate these Reflexes voluntarily so that you can DECREATE them voluntarily. We do this by pandiculating all the muscles and movement patterns involved in each reflex (Green Light, Red Light and Trauma). This allows YOUR BRAIN to regain control of your muscles, and in turn your body and movement. If you would like to learn more, you can try an online class with me here.

~

www.learnsomatics.ie

Hard Body, Soft Bed – Soft Body, Hard Bed

When I first began practicing Somatic Movements for myself a funny thing happened, I kept falling asleep when I would do the Backlift. I would lay down on my belly on the hard carpetted floor to do some Backlifts, I would begin with slow, careful contraction of my back muscles, lifting my head arm and opposite leg, and then slowly relax back to the floor under control…

…and then I would wake up about 20 minutes later in a little puddle of drool, slightly confused but very relaxed. The slow gentle release of tension in the muscles of my back as I pandiculated the Backlift, created a deep sense of relaxation and without even realising it I would drift off.

You see when you pandiculate, your muscles relax, soften and lengthen, reducing the level of tension in your body. And as they do this your whole body becomes more soft and pliable, making the hard floor feel more and more comfortable.

This led me to thinking about how many people sleep on incredibly expensive orthopedic mattresses. The manufacturers promise that it will feel like floating on a cloud, or being weightless. And I’m sure it does, but therein lies the problem. If YOU are hard, tense, stiff and immobile, you have to sleep on a bed that is soft and yielding in order to be comfortable. But, if YOU are soft and yielding in your body, suddenly the hard floor begins to feel just fine and comfortable. YOU begin to accommodate the floor.

Remember for hundreds of thousands of years we didn’t have beds or matresses. So as an experiment of sorts, I began sleeping on the floor. I did this for about a month. I slept on carpetted floor, on top of a yoga mat and a blanket. And whilst I did go back to sleeping in my bed, I slept just as well on the floor as I did in the bed. I will still periodically sleep on the floor, just because it feels good.

floor_sleep

When I teach clients Somatic Movements on the floor, a question I often ask them at the end of their class is “Do you feel like you could go to sleep where you are now on the floor?” And they always, without exception, answer with a kind of surprised, “Yes!”

I am not suggesting you throw out your bed and begin sleeping on the floor, but you could certainly use your comfort level on the floor to give you an idea of how much unneccesary tension you are holding in your body involuntarily (Sensory Motor Amnesia). If laying on the floor is very uncomfortable, you can be sure your body is tighter and more contracted than it needs to be.

If you would like to learn Somatic Movements that will enable you to release and relax your whole body try one of my online classes here or visit Learn Somatics on YouTube. With a daily Somatics practice the floor can be your friend again, just like it was when you were a kid.

As always thanks for reading.

www.learnsomatics.ie

Why Do You Have Stiff, Sore Joints?

The medical model generally views joint pain or problems as structural in nature and on occassion this is indeed the case. However, a far more common cause of joint problems is chronically tight and contracted muscles around a joint. Chronically tight muscles are not a structural problem they are a functional problem. Our muscles can easily become too tight as a result of our responses to everyday stresses, from performing repetitive tasks, a lack of movement or from an injury, impact, fall or surgery. These patterns of habitually tight, tense muscles show up in our bodies as the previously discussed Green Light, Red Light and Trauma Reflexes.

How do chronically tight muscles cause joint pain?
When the muscles that articulate a joint are ‘stuck’ at a high level of contraction they are shorter and tighter than is optimal. Short, tight muscles will draw the bones of the joint closer together compressing the joint and leading to pain and restricted movement. If the bony structures in the joint are being pulled too close to each other by the tight muscles these structures can begin to rub off each other and can eventually wear down the cartilage that protects the ends of the bones. So, over time what began as a functional muscular problem becomes a structural problem.

JointPainHip

In the case of the hip joint, pain can be caused by habitually contracted gluteals, piriformis and tensor fascia latae. These are all muscles that articulate the hip and leg. However it is never just one muscle that causes the problem as muscles always work in concert. The problem is always a larger, full body pattern of contraction. One sided hip pain, for example is often the result of a Trauma Reflex. It follows then, that an effective solution to the problem cannot only address one muscle. Learning to release the Trauma Reflex and regain balance and control of the muscles of the centre of your body will go a long way towards resolving your hip pain by addressing the entire body and improving control throught out the body.

By improving the function of the muscles around a given joint and addressing the full body pattern of contraction we can release ALL the muscles back to their true resting length. Then, compression of the joint is reduced and normal range of motion and comfort of the joint are restored. This outcome can be achieved safely, quickly and easily through the educational process of Somatics Education (aka Hanna Somatics). You must address the full body pattern of contraction by RELEARNING how to regain control over ALL the muscles involved in the pattern of contraction.

If you have tight painful joints and restricted movement and would like to learn how to release and relax your muscles for freer more comfortable movement, check out Learn Somatics on YouTube for a thorough break down of all the most fundamental and useful Somatic Movements.

As always, thanks for reading.

www.learnsomatics.ie

Red Light means ‘No!’

What is the Red Light Reflex and why must we be able to recognize it??

The Red Light Reflex, also called the Startle Reflex, is an automatic brain reflex that is activated every time we are startled or feel we are in sudden danger .ie; when we hear a loud noise, or someone yells ‘duck!’. It can equally be caused by spending too much time slumped in front of a laptop, tv, tablet or smartphone.

The purpose of Red Light Reflex is to contract all the major muscles of the front of our body so as to enable us to make ourselves smaller. This protects the soft and vulnerable internal organs located in our abdomen. Red Light is in effect the very opposite of the previously described Green Light Reflex. Green Light involves mostly muscles of extension (expansion), where as Red Light involves mostly muscles of flexion (withdrawal). Throughout our evolution, Red Light Reflex served a very practical and useful purpose. If Green Light is the ‘fight’ or the ‘flight’, Red Light is the ‘freeze’, or ‘play dead’. It is a shrinking away from fear or danger. Animals in the wild do this all the time as a means of hiding from predators, making themselves small and withdrawing into themselves. The main muscles involved are indicated in the image below, also involved but not indicated are the hip flexors, flexors of the arms and legs, and the internal rotators of the arms and legs.

Red Light_72ppi

Just as Green Light Reflex can cause problems when it becomes habituated, so too can the Red Light Reflex. It can lead to chronic neck pain, headaches, jaw pain, hip pain, mid back pain and shallow breathing. Shallow breathing in and of itself leads to low level anxiety as the body becomes stressed due to a lack of oxygen. This can lead to fatigue, depression and sleep problems. The wooden mannequinn below approximates the Red Light Reflex as it typically appears.

Mannequin_Startle_Reflex

Do you recognise this type of posture in yourself, or in others? It is, unfortunately, very common in modern society. Again, this type of stooped over posture is often associated with the aging process, but it is merely an habituated physical response to fear and stress, and one that is easily reversed. But before we get to that there is one more brain reflex to discuss. Next up… The Trauma Reflex.

Summary:

  1. The Red Light Reflex is an automatic Brain Reflex triggered when we are startled or feel we are in danger.
  2. It allows us to withdraw from a perceived threat by causing all the muscles of the front of the torso to tighten.
  3. If habituated it can cause neck, jaw and mid back pain, shallow breathing and fatigue.
  4. The slumped posture it creates is associated with aging but it can be easily reversed.

You can start learning how to regain control of the Red Light Light Reflex right now by visiting Learn Somatics on YouTube.

As always, thanks for reading.

www.learnsomatics.ie

Sensory Motor Amnesia – Hidden in Plain Sight

What is Sensory Motor Amnesia and why do you need to know about it?

Sensory Motor Amnesia inhibits movement quality and freedom by reducing muscle control and function and can be defined as:

‘A partial or total loss of (memory in) our ability to SENSE and MOVE our muscles’.

Muscles have only two functions, they CONTRACT and they RELAX, that’s it! They do nothing else, so if you lose voluntary control over those two FUNCTIONS, you lose voluntary control over the result of those functions. Which is… drum roll… your MOVEMENT! The impulses which signal your muscles to contract or relax come from the Motor Cortex (one half of the Sensory Motor Cortex). So the problem of SMA is not a structural problem in the muscles but a neurological event in your brain.

SMA Brain Diagram

Sensory Motor Amnesia can develop in the following ways;

  1. Through stress (physical and emotional)
  2. Through physical trauma (surgeries, injuries, falls, impacts)
  3. Through repetitive actions (working at a computer, driving, playing a musical instrument etc)
  4. Through lack of movement (sedentary lifestyle)

When SMA develops your muscles become ‘stuck’ in contraction to some degree. We ‘forget’ how to VOLUNTARILY release and relax them to their full resting length. These ‘stuck’ muscles pull us out of shape creating postural distortions. These postural distortions make it more difficult to move well by reducing our range of motion and can eventually cause chronic muscle pain (back, hip, neck, shoulder, knee, ankle pain etc.) without apparent cause. What do these postural distortions look like? Check out my next few posts to find out…

Summary:

  1. Sensory Motor Amnesia is ‘a partial or total loss of (memory in) our ability to SENSE and MOVE’ our muscles.
  2. When we develop SMA we can no longer relax our muscles to their proper resting length.
  3. SMA is a brain event that causes a functional muscular problem.
  4. It is not a structural problem.
  5. It is developed through stress, trauma, repetitive actions or lack of movement.
  6. It causes postural distortions and muscular pain in our bodies.

Want to resolve your SMA and move better right now? Check out my Learn Somatics YouTube channel where I’ll be breaking down all the most fundamental Somatic Movements you need to feel better and move better.

~

www.learnsomatics.ie

Wise & Shine

We exist to help people understand themselves.

Daniel Toker, PhD

Neuroscientist at UCLA

Expression of Health

Craniosacral Therapy in Canterbury

Evolve Life Somatics

"Freer movement for a fuller life"

Zero Carb Zen

Eat Meat. Drink Water.

Ebru's Yoga Blog

bla bla yoga bla bla breath bla bla practice