Laby-what? You might stumble across the term "tonic labyrinthine reflex" during your pregnancy, or your doctor might mention it and you wonder: What is it all about? Primitive reflexes are something that has been preserved since the Stone Age. Although more or less useful in modern times, it is a very exciting and complex topic. We explain what the tonic labyrinthine reflex in your baby is and what nature intended by it. You can find all the information about the labyrinthine reflex in this article.
What is the tonic labyrinthine reflex?
In the life and development of your baby, there are numerous reflexes that are more or less important for your little one. For example, the Moro reflex is relatively well-known, but the stepping reflex is also a familiar term to many parents. With the tonic labyrinthine reflex – TLR for short – many people do not immediately know what it is.
In short: It is a component of primitive reflexes – and is already noticeable in the womb.
Tonic labyrinthine reflex forwards and backwards
A distinction is made between the tonic labyrinthine reflex forwards and the tonic labyrinthine reflex backwards, each of which has a different task.
- Tonic labyrinthine reflex forwards: In the forward-facing TLR, the newborn bends its head forward. This is followed by a bending of the entire body. The forward TLR already develops from the 12th week of pregnancy. It allows your unborn baby to go into the fetal flexed position to curl up in your belly in a space-saving way and make itself comfortable.
- Tonic labyrinthine reflex backwards: In the backward TLR, your little one stretches its head backwards, so exactly the opposite happens – the body is stretched. While the unborn child is still in the belly, the backward TLR ensures that your little one puts itself into the extended position. In this way, vaginal birth is triggered, and your little one can turn through the birth canal. After birth, the backward TLR serves as a training program for the extensor muscles of the small body. It enables your baby to straighten up – against gravity.
In short: The tonic labyrinthine reflex has an influence on the entire muscle tone from the head downwards, i.e., the natural tension of the muscles.
Why is the tonic labyrinthine reflex important?
Both the forward and backward TLR therefore influence the physical development of your darling. It fulfills a fundamental function in the development of posture and upright gait. Furthermore, the TLR contributes significantly to the development of the vestibular system.
Since our vestibular system is in turn closely linked to our other senses, the tonic labyrinthine reflex has an all-encompassing effect on many functional areas in the human organism: spatial and acoustic perception, i.e., our auditory processing and our eye movement, for example. This in turn is an important basis for our cerebellum to coordinate movements – so that we humans can move smoothly.
When does the tonic labyrinthine reflex recede?
As with all primitive reflexes, the tonic labyrinthine reflex also recedes over time. From the third month, it usually begins to weaken. However, it helps the child until the age of about 3 ½ years to straighten up and develop a stable posture. This is the rule for most children. In rare cases, however, the TLR persists. If this is the case, it can have far-reaching consequences.
What happens if the Tonic Labyrinthine Reflex remains active?
If residual reactions of the TLR persist beyond the typical timeframe, it can irritate the child's vestibular system – which in turn leads to difficulties in many areas of life. If a child lacks a stable sense of balance, it means they are constantly in motion to maintain equilibrium. This manifests as motor restlessness. Furthermore, the constant focus on balance comes at the expense of concentration, endurance, working speed, and learning ability.
In a child where remnants of the TLR are still active, every head movement forward or backward changes the muscle tone throughout the entire body. As a result, a fixed spatial point of reference is missing. Space, distance, depth, and speed can often not be assessed by the child, or only with great difficulty. This has an impact on the ability to orient oneself, as well as time perception and organizational skills.
In addition, a child with active residual reflexes of the TLR may have problems recognizing logical patterns and letter sequences. The inner chaos is often reflected in their behavior: the child is frequently forgetful, untidy, or careless.
How can residual reactions of the forward TLR be recognized?
Residual reactions of the forward TLR can be recognized, for example, by a rather slumped posture, with a rounded back and weak muscle tone. Children often hold onto their trousers or cross their arms behind their backs to stabilize themselves and their balance. They also frequently lean against things or sit on the floor at every opportunity.
How can residual reactions of the backward TLR be recognized?
If, on the other hand, residual reactions of the backward TLR dominate, this often manifests in an overextended posture and rigid muscle tone. Children with a backward TLR move stiffly, awkwardly, and have difficulty bending their legs. They often walk on their tiptoes, and physical activity is usually exhausting. For example, a child with a backward TLR cannot do a somersault because extending the legs when pushing off leads to an extension of the entire body and thus the neck. The child cannot tuck their head in because the extension occurs unconsciously – triggered by the reflex.
What can be done about residual reflexes of the TLR?
It is important that you regularly attend check-ups with your pediatrician. Here, it is routinely checked how your little one is developing – and whether the primitive reflexes, and thus also the tonic labyrinthine reflex, are regressing. If this is not the case and residual reactions of the TLR are still detected in your child, you must react – but there is no need to worry. There are ways to support your child, to give them a developmental "boost," and to minimize the residual reactions. This is done with the help of certain exercises and therapies. This is referred to as reflex integration, which is usually offered in occupational therapy practices. So, if remnants of the TLR are found in your little one, there is no reason to despair. Neuronal maturation is still possible with the right treatment.
Tonic Labyrinthine Reflex: A brief conclusion
The tonic labyrinthine reflex is important for early childhood development. A distinction is made between the forward TLR and the backward TLR. As a rule, the reflex regresses as the child gets older. If it does not, this can have far-reaching consequences – both on a motor level and in terms of behavior and learning ability. Thanks to occupational therapy measures, however, there are ways to perform reflex integration, i.e., to inhibit the active TLR and alleviate the symptoms.
