The Nature of Immersion

It is late, probably past midnight, and my room is dark except for the glow of my monitor three feet from my face. I am wearing headphones, and through them I hear footsteps. Not my own, but those of an enemy player somewhere on the map. My teammates are dead. I am playing Search and Destroy in Call of Duty. It is a 1v3, and if I lose this round, we lose the game. Nick, Griffin, and Yoobin have gone silent in the voice chat, giving me space to concentrate. I do not notice that my parents have called my phone twice. I do not notice that I have been holding my breath.

The only thing that exists is the game. This was the spring of 2020, and like millions of other people, I was stuck at home during the COVID-19 pandemic. I could not see my friends in person, so instead, we saw each other online, in the lobbies of Call of Duty, Apex Legends, and Fortnite. What began as a way to pass the time became something more. Night after night, I would sit down at my desk, put on my headphones, and disappear into another world. Hours would pass like minutes. My body would remain in my bedroom in Seattle, but my mind was somewhere else entirely.

I have thought a great deal about what made those experiences so immersive, both then and now. But now, as a neuroscience student, I have frameworks for understanding what was happening in my brain during those late-night gaming sessions. However, I also believe that immersion is fundamentally a feeling, best described through experience rather than science. Scientific explanations can only provide frameworks for engineering immersive experiences and better understanding what contributes to them. Based on my experiences, I understood immersion to be the sensation of being somewhere else.

Not metaphorically, but the feeling like I was actually there. My visual field would narrow until the edges of the monitor disappeared, and my existence collapsed into the game. The darkness definitely helped. There was nothing in my peripheral vision to remind me that I was sitting in a bedroom and not standing in a bombed-out building in some fictional war zone. The audio through my headphones completed the illusion. Footsteps, gunfire, and my friends' voices created a soundscape that overrode the silence of my physical environment. After a while, I stopped seeing the game as something I was watching on a screen and started experiencing it as something I was inside.

What struck me most about this immersion was how it changed the sense of my own body. In normal life, I am aware of my hands, my posture, my breathing. When I was immersed in a game, that awareness dissolved. My fingers moved on the controller, making precise micro-adjustments to the joysticks, but I was not conscious of them as fingers. They had become instruments through which I acted in the game world without any sense of mediation. When I moved the right joystick, I didn't think about moving it. I simply looked in a different direction. The mapping between my physical movements and my character's actions had become so automatic that the controller felt like an extension of my body rather than a tool I was operating.

This was most intense during high-stakes moments. In a clutch situation, last alive with multiple enemies remaining and the round on the line, my focus would sharpen to a point. I would lean forward without realizing it. My breathing would become shallow or stop altogether. Time would seem to slow down. Every sound became significant. A footstep meant an enemy was nearby. A reload sound meant a window of vulnerability. My body was flooded with adrenaline, my heart rate elevated, but I was not aware of any of this in the moment. I was simply present, completely absorbed in the task of surviving and winning.

I now understand that this phenomenon was a direct result of neural representations in the motor cortex linking these precise finger movements to the in-game actions. I believe this type of neural rewiring enhances the immersive experience by making movements automatic and creating a sense of embodiment, linking your mind to the in-game character. The social dimension added another layer to the immersion. I was not just playing a game. I was playing with Nick, Griffin, Yoobin, Colson, Cameron, and Sebastian. We were competing against other teams, but we were also competing against each other in a friendly way.

Who got the most kills, who clutched the most rounds, and who embarrassed themselves with a bad play. Every moment carried social stakes. If I choked in a 1v3, my friends would roast me. If I pulled off something impressive, I would earn their respect. The game was a social display where my performance mattered to people I cared about. This kept me invested in a way that single-player games rarely did, with social consequences that carried back into reality. During COVID, these gaming sessions became our primary form of social interaction. We couldn't interact in person, so we did it online instead.

The game's immersion became intertwined with the feeling of connection to my friends. When the game ended and I took off my headphones, the silence of my room felt particularly isolating. It was like falling back to reality. This contrast made the game's immersion feel even more intense. For a few hours each night, I got to be somewhere else, with people I cared about, doing something that felt meaningful. Then the headphones came off, and I was alone again. Now, several years later, I study neuroscience. I research brain-computer interfaces and spend my days thinking about how the brain processes sensory information and generates motor commands.

This has given me a new perspective on those gaming experiences. It does not replace the felt quality of immersion, but it helps explain the mechanisms underlying it. Based on my current understanding, immersion arises from the integration of artificial sensory information with attention and motor systems. First-person shooter games are particularly effective at producing immersion because they take over the brain's natural mechanisms for navigating and acting in the world. The first-person perspective means the visual information matches what you would see if you were actually in that environment.

The audio provides spatial cues that your auditory system interprets the same way it would interpret real sounds. Your motor cortex develops a direct mapping between joystick movements and in-game actions, so that moving in the game feels as natural as moving your own limbs. When these systems are engaged simultaneously and consistently, the brain begins to treat the game world as real. Or at least, as real enough that the distinction stops mattering. The role of attention is critical. Games like Call of Duty require constant attention. Threats can appear at any moment, and millisecond-scale reactions determine whether you live or die.

This forces the brain into a state of heightened awareness where attentional resources are fully committed to the task. There is no cognitive capacity left over to notice that you are sitting in a bedroom, that your phone is buzzing, that your parents are calling your name. The game monopolizes attention so completely that everything else falls away. This understanding has shaped my interest in neurotechnology. I now see video games as a primitive version of what neural interfaces could eventually achieve. Current games create immersion by providing sensory information through screens and speakers and accepting motor commands through controllers.

But these are indirect channels. Imagine a technology that could provide sensory information directly to the brain and read motor intentions directly from neural activity. The potential is near infinite. You could create virtual environments that are indistinguishable from reality because the brain would receive exactly the same signals it receives from the real world. You could be sitting on a couch, but your conscious experience is fully intertwined with the game. You would have fully left your body and actually be in this environment. This is not science fiction.

Researchers are already developing systems that can decode motor intentions from brain activity and stimulate sensory experiences through neural implants. The technology is crude compared to what games achieve through conventional means, but it is improving rapidly. Within my lifetime, I do not expect we will see neural interfaces that can create experiences of total immersion, but I do think it is possible in the future, and at a very low likelihood, within my lifetime. Virtual worlds that feel completely real because, from the brain's perspective, they are real.

Immersion is about escape and presence. It is the ability to leave one reality and enter another, to be fully somewhere else for a while. It was survival. It was how I stayed connected to my friends, how I maintained my sanity, how I found moments of meaning and excitement in a period defined by isolation and uncertainty. The games I played were just games, but the immersion they provided was real. It was one of the most vivid experiences of my adolescence, and it set me on the path I am still walking today. I am trying to understand the brain, and trying to build technologies that can give people experiences as powerful as the ones I had in that dark room, alone with my friends, somewhere else entirely.