What are the key takeaways from this StarTalk Radio episode?

Key insights include: **Neural timekeeping mechanisms:** The brain uses multiple specialized clocks for different timescales—microseconds for sound localization, seconds for conversation timing, circadian rhythms for daily cycles—unlike mechanical clocks that measure all durations with one mechanism through oscillation counting.; **Mental time travel capability:** Humans uniquely project into future scenarios to connect cause and effect across months or years, enabling agriculture's invention (plant now, harvest later) but failing at long-term threats like climate change due to cognitive limitations in temporal reasoning.; **Memory storage architecture:** Information stores through synaptic weight changes between neurons, not separate memory modules like computers. This means uploading skills directly to brains (Matrix-style kung fu) remains implausible because computation and memory are inseparable in neural networks, unlike Von Neumann computer architecture.

What did Dean Buonomano discuss on StarTalk Radio?

Neuroscientist Dean Buonomano explains how the brain processes time through neural dynamics rather than oscillators, explores mental time travel as uniquely human cognition, and argues the brain may be the only time machine physics allows. Key topics include: **Neural timekeeping mechanisms:** The brain uses multiple specialized clocks for different timescales—microseconds for sound localization, seconds for conversation timing, circadian rhythms for daily cycles—unlike mechanical clocks that measure all durations with one mechanism through oscillation counting.; **Mental time travel capability:** Humans uniquely project into future scenarios to connect cause and effect across months or years, enabling agriculture's invention (plant now, harvest later) but failing at long-term threats like climate change due to cognitive limitations in temporal reasoning..

How long is this episode of StarTalk Radio?

This episode is 49 minutes long. SignalCast provides an AI-generated summary so you can get the key insights in about 3 minutes.

StarTalk Radio

Your Brain is a Time Machine with Dean Buonomano

January 9, 2026

49 min episode · 2 min read

Dean Buonomano

Episode

49 min

Read time

2 min

Topics

Leadership, Artificial Intelligence, Software Development

AI-Generated Summary

Published Jan 11, 2026

Key Takeaways

✓Neural timekeeping mechanisms: The brain uses multiple specialized clocks for different timescales—microseconds for sound localization, seconds for conversation timing, circadian rhythms for daily cycles—unlike mechanical clocks that measure all durations with one mechanism through oscillation counting.
✓Mental time travel capability: Humans uniquely project into future scenarios to connect cause and effect across months or years, enabling agriculture's invention (plant now, harvest later) but failing at long-term threats like climate change due to cognitive limitations in temporal reasoning.
✓Memory storage architecture: Information stores through synaptic weight changes between neurons, not separate memory modules like computers. This means uploading skills directly to brains (Matrix-style kung fu) remains implausible because computation and memory are inseparable in neural networks, unlike Von Neumann computer architecture.
✓Temporal window integration: The brain automatically synchronizes audiovisual inputs within 200-400 milliseconds, adjusting for processing speed differences (auditory signals process faster than visual despite light traveling faster than sound), creating seamless perception regardless of distance from source events.

What It Covers

Neuroscientist Dean Buonomano explains how the brain processes time through neural dynamics rather than oscillators, explores mental time travel as uniquely human cognition, and argues the brain may be the only time machine physics allows.

Key Questions Answered

•Neural timekeeping mechanisms: The brain uses multiple specialized clocks for different timescales—microseconds for sound localization, seconds for conversation timing, circadian rhythms for daily cycles—unlike mechanical clocks that measure all durations with one mechanism through oscillation counting.
•Mental time travel capability: Humans uniquely project into future scenarios to connect cause and effect across months or years, enabling agriculture's invention (plant now, harvest later) but failing at long-term threats like climate change due to cognitive limitations in temporal reasoning.
•Memory storage architecture: Information stores through synaptic weight changes between neurons, not separate memory modules like computers. This means uploading skills directly to brains (Matrix-style kung fu) remains implausible because computation and memory are inseparable in neural networks, unlike Von Neumann computer architecture.
•Temporal window integration: The brain automatically synchronizes audiovisual inputs within 200-400 milliseconds, adjusting for processing speed differences (auditory signals process faster than visual despite light traveling faster than sound), creating seamless perception regardless of distance from source events.

Notable Moment

Stephen Hawking hosted a party specifically for future time travelers at a predetermined date and location, then publicized it afterward. When nobody appeared, this empirical test supported his time travel prevention conjecture suggesting undiscovered physics laws prohibit temporal paradoxes.

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Episode Transcript

Might the human mind be the only place in the universe where time travel is allowed? Coming up on StarTalk. Welcome to StarTalk. Your place in the universe where science and pop culture collide. StarTalk begins right now. This is StarTalk special edition. Today, we're talking about the time machine of the mind. Oh, what does that mean? Well, let's go to my cohost here, Gary. Gary O'Reilly, how are you doing, man? I'm good, Neil. We're all back in our man caves remotely. So, it's a bit strange from being in your office again. I miss my office. Yeah. Chuck Chuck, actor, comedian? Yes. I am, I'm actually not here, guys. I'm I'm I'm in the future. You're in the future in the time machine of my mind. I'm in my I'm in the time machine of my mind talking to you from there. Well, you and your producers cooked up this episode, and, you know, it needs good ingredients to do the right thing for it. So tell me tell me your thinking. Alright. Let's put it this way, shall we? Is time an illusion? Alright. Hold on to that thought for a moment. And from moment to moment, we transport ourselves backwards and forwards in time in our own brains, remembering the past, projecting to the future. But how does that all work? In today's episode, we are going to wrap our heads around time. Well, we're gonna try to wrap our heads around time, and time as we know it in physics, and how we experience it in our own brains. How do we tell time? Why do we tell time? And finally, is time travel possible, but only in our minds? Okay. That's the tease. Let's plug in. A very rich topic that's even been addressed in many a film. Mhmm. And so I'm curious to see how much of that is plausible or just fantasy. So we introduce oh, yes. You know, we're we're growing our lists, our stable of neuroscientists, because that's the coolest frontier science out there right now. Oh, yeah. Dean Buonamano, professor of neurobiology and psychology at UCLA, UCLA, as as the as the non informed folks might call it. Your author of Your Brain is a Time Machine, the Neuroscience and Physics of Time. That's what really got us interested in your work. So this we we are delighted to know this. Oh, by the way, Buon nomano, we were speaking offline, I would have guessed that meant good hands in Italian, that you'd come from a long line of surgeons and other people who do good things for people. But you you disavowed me of this. Yes. We're more on the sketchy side of that, so I think we're mostly, pickpockets. Pickpockets. Hey. Listen. You gotta have some really good hands to be a good pickpockets. Yeah. I mean, I think it's underappreciated exactly. Yeah. Let you have never heard a pickpockets say, no. I'm off thumbs today. …

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