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A Robot That Dreams

A Study on How Robots Sleep

In the near future, robots may become more than tools that support our daily lives.

They may come to exist alongside us as companions, quietly sharing our everyday routines.

If we are to live with robots over long periods of time, what kind of relationship would allow us to feel at ease rather than stressed, reassured rather than uneasy?

Among the many possible approaches to this question, this study focuses on a moment that is usually overlooked: the time when robots are not actively doing anything.

Rather than treating standby periods or charging period as mere inactivity, this project reconsiders these functionally constrained moments as a form of “sleep.”

From this perspective, we explore how robots might communicate even while resting, and how such communication could foster a more gentle and responsive relationship between humans and robots.

A Robot That Dreams

The sight of a human or animal sleeping peacefully often brings a sense of calm to the observer.

Subtle movements during sleep—small twitches or shifts of the body—are commonly perceived as natural signs of health and life.

In humans, such bodily movements frequently correspond to what is being dreamed.

Inspired by this, we created an installation in which a robot is assumed to dream while it sleeps, and to exhibit involuntary movements in response to those dreams.

Small motions such as gently moving its legs or scratching part of its body emerge during sleep.

By grounding these movements in dream content rather than randomness, the robot’s behavior becomes more legible and familiar, inviting viewers to form a quiet sense of empathy.

Whether this approach truly fosters a feeling of coexistence is left to the experience of those who encounter the installation.

Affective Communication with Robots

Robots can sometimes evoke feelings of unease or fear.

One reason may be that their internal states—what they are perceiving or why they act in certain ways—are difficult to grasp from external observations.

In this work, experiences gathered during the robot’s active periods are presented again during rest, in the form of dreams and corresponding bodily responses.

This allows viewers to indirectly sense the context behind the robot’s actions.

Importantly, this approach does not rely on the robot having a cute or friendly appearance.

Instead, it suggests that affective communication can emerge through shared experience and recognizable traces of perception.

By expressing these traces in the most harmless and vulnerable state—sleep—the robot gradually acquires a sense of life within the observer’s perception, gently narrowing the psychological distance between human and machine.

Credit

Creative Director: Ko Izumi(Dentsu Lab Tokyo) | Group Manager: Kengo Shibuya(Dentsu Soken) | Creative Technologist: Yusaku Wakazono(Dentsu Lab Tokyo) | Creative Technologist: Ryonosuke Ono(Dentsu Lab Tokyo) | Creative Technologist/ Animator: Taiki Tsuno(Dentsu Lab Tokyo) | Animator: Sakura Hoshi(Dentsu Lab Tokyo)