Hidden Rhythms |
Your very being finds ways of connecting with others, even without your knowledge. Spontaneous Synchronization is a researched phenomenon that hides within the systems within our bodies, beneath our awareness. It’s in your heartbeat, your breath, and even in the neurotransmissions in your brain—-and science is only beginning to measure it.
Yet, ancient as you might think it is, the Torah alludes to this underlying aspect of the human experience.
Consider what happens when two people sit down and simply look at each other. They’ve received no instructions, nor do they have a shared task.
Just two human beings, face to face, panim el panim, describing an encounter with another that has an inner depth.
Researchers at the University of Lyon recorded the full-body movements of pairs of people in exactly this situation. What they found was striking: within seconds, the participants’ bodies began to move in coordinated patterns, not mimicking each other, but synchronizing with each other spontaneously, without any awareness that it was happening. The researchers make it clear that this differs from “the chameleon effect” when two people tend to mirror non-verbal behavior. The synchrony studied wasn’t about obvious gestures, but was almost imperceptible, as though the two people had quietly become one system. This only occurred when participants in the study were seated in view of one another even at some distance.
This finding is one data point in an increasingly robust body of research revealing a subtle connection between people.
Inside the human body, studies have shown that when two people share a compelling experience, whether listening to the same story or sitting near each other in quiet proximity, —-their heartbeats begin to align. Researchers at UC Davis found that romantic partners’ heart rates synchronized when seated quietly together, and that this synchrony dissolved when the couples were paired with strangers instead. More recently, researchers discovered that this effect is not limited to people who love each other: total strangers’ heartbeats can fall into rhythm when they are absorbed in the same narrative, even when they are listening to it separately, in different rooms.
But what if the story they heard wasn’t interesting or compelling? Well, the researchers found is that it isn’t primarily emotion that drives this connection. In one experiment, participants listened to instructional videos — dry, unemotional content — and their heart rates still fluctuated together. But the synchrony dropped when the same participants were asked to watch the videos again while counting backwards to distract themselves. So, a shared engagement is what made the difference. When we pay attention to the same thing, our hearts begin to keep the same time.
This process is working in our brains. Neuroscientists have discovered that when people interact, something special occurs. When a speaker tells a story to a listener, the listener’s neural patterns begin to mirror the speaker’s —- and crucially, not just after a delay, but sometimes in anticipation. The greater the synchrony between the two brains, the better the listener understands and retains what is being said.
The quality of the interactions matter, and results vary when friends interact as opposed to strangers. What was discovered is that when two people seek genuinely to understand each other, they don’t merely exchange information. They become, briefly, a shared mind.
These studies do not reflect any deliberate effort. People don’t choose to synchronize. These are unintentional actions that the body does when the conditions of genuine encounter are present.
The Talmud states: Kol Yisrael arevim zeh lazeh —כָּל יִשְׂרָאֵל עֲרֵבִים זֶה בָּזֶה (Tractate Shevuot 39a) all Israel is responsible for one another. The word arevim shares a root with erev, meaning the evening—-when light and darkness begin to blend. The word literally means mixed into one another, as one would mix a dough. The word suggests not only obligation but the notion that people are not really separate, but bound together in ways that are beyond what we can see. This is the particular in Judaism: we have a unique obligation to be accountable to each other.
But there is a more universalistic responsibility as well.
The Sefat Emet teaches that the deepest level of each person contains an irreducible divine spark which is not truly separate from the divine spark in another. What separates us is outer trappings but beneath that, we are made of the same light.
Spontaneous physiological synchronization does not prove this. Science has not reached that far nor is that science’s purpose. Science examines the ‘what’ but doesn’t delve into the ‘why’. But these efforts reveal something impalpable that happens at the boundary of two people: the biological separateness between begins to blur in measurable ways, through heartbeats and brainwaves. The physical world appears to be hinting at something the spiritual world has been trying to say.
We can approach our every day interactions differently with this knowledge. Researchers found that certain synchronies don’t occur merely because two people are exposed to the same stimuli. It depends on whether they pay attention.
Distracted listeners do not synchronize. Absorbed listeners do. An awakened, directed presence is what makes the difference. When we are genuinely present, not simply performing attention but actually engaged, actually caring about what is happening in front of us, something biological shifts. The boundary between self and other becomes more porous.
The Torah’s focus on community, on connection, and the sublime face-to-face encounters begin to seem less like spiritual ideals and more like descriptions of how we’re actually built.