What the Body Is SayingIN BRIEF
Communication is more than just spoken words. The body also sends out many messages. For an autistic person, gestures, gaze, and facial expressions often work differently, and these signals serve a specific purpose. Sometimes the face stays very calm to save energy. Sometimes the body moves in repetitive ways to ease stress or express great joy. These movements help the person feel good and communicate. It is important to understand that these signs are not flaws to be fixed. They are messages from the body. By getting to know and understand these signals, we can better recognize an autistic person’s needs and emotions. In autistic and non-autistic people alike, the body communicates information that words do not carry, but not necessarily in the same way.
The Neutral Face (Flat Affect)
There is often a gap between the intensity of the emotion a person feels and what can be seen in the muscles of their face. This phenomenon, sometimes called “flat affect,” refers to a scaling back of automatic facial expressions. The face can stay calm while the person is brimming inside with joy, sadness, or interest. This is not indifference, but a different way of managing the body’s energy.
My child’s doctor once wrote in the file that the parent (me) had a flat, neutral affect. I was insulted. Now I understand why. When the subject is not “me,” I try to take up as little space as possible so the other person can focus on what matters, in this case, my child. Above all, when my emotions start racing, it becomes harder for me to think and retain information, so in stressful situations I sometimes appear impassive. I would add that I am very afraid of becoming dysregulated and overwhelmed by panic when something disruptive happens; this technique lets me keep control over what shows on the outside. And yet I have a reputation for being a particularly expressive person!
Conserving Cognitive Resources
Maintaining the facial expression others expect requires conscious, sustained effort. Managing those muscles consumes cognitive resources, which leaves fewer available for understanding and thinking. A neutral face preserves energy for processing information. Forcing a social expression during intellectual effort amounts to depriving a person of part of their thinking capacity.
The Resting Face
The resting face can look like the neutral face, but it is different: it is the face the body settles into when the mind is elsewhere or completely relaxed. In autism, this face is often read by others as a sign of anger, judgment, or sternness. In reality, it carries no particular intent; it is simply the face in its natural state of muscular relaxation.
Scenario
Chloe is in the kitchen making her coffee, lost in thought. Her partner walks in and asks her why she is angry. Chloé is surprised, because nothing negative was on her mind, but the expressions on her face had simply gone quiet. She now has to spend energy reassuring her loved one when she was in a state of complete calm.
When the Mask Is Off
No human being can be expected to hold a social mask in place 100 percent of the time. When the signals a person gives off go unmonitored, misunderstandings can arise. Neurotypical people are used to adjusting their face the moment someone enters their field of vision, a true automatic politeness reflex. The autistic brain leaves the facial muscles at rest until communication actually begins. This resting face is quite simply a sign of comfort and inner security.
Stimming as Language
Sensory self-stimulation, or stimming, is one of the most powerful signals of the autistic body. These movements (hand-flapping, rocking, spinning an object) serve to self-regulate or to communicate. They can help manage a surge of energy, express an emotion, or release the overflow during sensory overload.
Scenario
William receives wonderful news, and his joy is so strong that he starts bouncing on the spot and flapping his hands rapidly. This movement helps his body release the intensity of the news. If he tried to stay still, he would feel overtaken by an unpleasant physical tension. Movement is concrete, and it brings relief.
Going furtherRegulating the Nervous System
Stimming acts as a stabilizer. These repetitive movements help the nervous system maintain a state of calm, a phenomenon documented in research on sensory regulation. They make it possible to filter out ambient noise or discharge accumulated stress. Prohibiting this mechanism amounts to preventing a person from expressing well-being or signaling that their limits have been reached. It is a tool of sensory survival, essential to a person’s equilibrium.
Looking Away to Listen
Eye contact is often experienced as a sensory intrusion or a major distraction. For many autistic people, looking elsewhere while listening makes it easier to process information. The gaze drifts downward, off to the side, or seems lost in space. The human face is so rich in micro-movements that it can scramble the verbal message. By relying on peripheral vision or fixing on a neutral point, an autistic person filters out the visual noise and can finally concentrate on the meaning of the words. Which raises a question: what truly matters here: looking someone directly in the eye, or communicating better?
Personal Space (Proxemics)
Physical boundaries are not felt the same way by everyone, and this varies enormously from one autistic person to another. Some need a larger buffer of personal space to avoid overload, while others seek out physical closeness. For some, the whole notion is too abstract to grasp, which makes it harder to manage what counts as a socially acceptable distance.
Positioning in Space
The autistic body needs to know where it begins and where it ends. For many, an unexpected intrusion into personal space is experienced as a sensory shock. Where a person places themselves in space is a message in itself: moving away from a group may signal saturation (too much movement, too many smells) rather than rejection. Sensory profiles vary enormously from one person to the next. Some autistic people avoid all unexpected physical contact, because unanticipated touch registers as an alarm. Others, on the contrary, seek firm physical pressure or settle into a snug space to better feel the outline of their own body and anchor themselves in reality. These two profiles are opposites, yet they answer the same fundamental need: for the body to know exactly where it is.
The Voice: Tone, Volume, and Pace
The tone, volume, and rhythm of speech are major autistic signals. Some voices are monotone (monoprosody); others become highly expressive and loud when the topic is fascinating. Regulating vocal volume is often a challenge for autistic people, especially when tired or excited.
The voice is a good indicator of the state of the nervous system. Although this varies from one autistic person to another, and knowing the person well is essential for reading the nuances, under stress the voice may become higher-pitched or shut down entirely (situational mutism). Conversely, a very calm, flat voice may signal that the person is using all their energy to stay organized and logical. Understanding these variations makes it possible to gauge how tired or engaged a person is without relying solely on the content of their words.
