TED Radio Hour – How does your brain perceive the world?

Air Date: March 20, 2026
Host: Manoush Zomorodi
Theme: Exploring how our brains perceive reality, process memory, and connect with others—and what happens when our internal experiences don’t match the norm.

Episode Overview

This episode dives deep into the fascinating spectrum of human perception, memory, and connection. Host Manoush Zomorodi interviews thinkers whose work uncovers vast differences in how our minds work: from aphantasia (the absence of a "mind's eye") to the fragility of memory and the surprisingly fundamental art of flirting. The episode asks: How do our brains build our picture of the world and of each other? And how does understanding our differences help us grow and connect?

Key Discussion Points & Insights

1. Aphantasia: When the Mind’s Eye is Closed

Guest: Alex Rosenthal (Editorial Director, TED)

• Understanding Aphantasia

  • Alex Rosenthal can’t form visual images in his mind, a condition called aphantasia.
  • There’s a spectrum: About 2-4% have aphantasia, while 3-6% have hyperphantasia (extremely vivid imaginations). Most people fall between.
  • Visualization isn’t just visual: Some people lack an “inner monologue” or can’t recall certain sensory information (like taste or sound).

• Personal Conversation & Visualization Exercise

  • Alex guides Manoush through a visualization of an alien encounter.
  • Manoush "sees" everything, describing colors, shots, and motion like a movie in her mind (02:19–02:43).
  • Alex, contrastingly, experiences only concepts with no visual images at all (03:02–03:15).

• Memorable Quote:

  “I see nothing. I got nothing... The planet is a concept, not like a thing that I’m visualizing.”
  — Alex Rosenthal (03:02)

• Impact on Memory & Emotional Connection

  • Alex cannot picture even the faces of his loved ones, affecting his memories and emotional recollection (08:05–09:17).
  • He recognizes faces in real life but can’t summon them in his mind (08:57).

• Diversity of Experience

  • Human inner experience varies dramatically; we only have one "data point"—our own.
  • Embracing this neurological diversity (including ADHD, autism, etc.) should transform how we think of "normal" and foster richer collaborations (10:19–12:34).

• Notable Quote:

  “Collectively, with billions of people, we probably have billions of interior experiences... It’s much more exciting for people to be way different than way the same.”
  — Alex Rosenthal (11:16)

Timestamps:

• Visualization exercise: 01:57–03:54
• Defining aphantasia: 03:15–03:54
• Effects on memory and social understanding: 08:05–09:17
• Broader implications: 10:19–12:34

2. How Memory Really (Doesn’t) Work

Guest: Dr. John Wixted (Professor of Psychology, UC San Diego)

• Memory is Fallible & Malleable

  • John recounts his vivid memory of 9/11—a memory later corrected by his wife, revealing how personal recollections can be surprisingly inaccurate (16:19–18:11).

• Iconic Eyewitness Case: Jennifer Thompson & Ronald Cotton

  • Jennifer Thompson wrongly identified Ronald Cotton as her attacker; her confident courtroom testimony led to his conviction and 11 years in prison—until DNA exonerated him (19:21–20:40).
  • Her initial (less confident) identification differed greatly from her later certainty (21:14–22:03).
  • The case shows how memory can become deeply contaminated over time, especially through repeated police lineups and suggestive questioning.

• Key Insight:

  • Reliable eyewitness memory exists, but only when collected immediately, before contamination.
  • Memories are "collected" like forensic evidence; the more they’re handled, the less accurate they become (23:14–24:07).

• Notable Quote:

  “Memories are not like video recordings. They’re more like evidence from a crime scene collected by people without gloves, distorting and contaminating it with every touch."
  — Jennifer Thompson (via Wixted, 23:14)

• Implications for Justice

  • Legal systems often misunderstand the science, treating confident—but contaminated—memories as ironclad evidence.
  • John’s advocacy and research have contributed to exonerations of the wrongly convicted.

• Notable Quote:

  “You have to find a way to take [new science] under consideration because that is what justice looks like. We just made the understandable mistake…of listening to witnesses’ confident testimony at trial…We have a better understanding now.”
  — John Wixted (33:12)

Timestamps:

• Personal memory & its failures: 16:19–18:30
• Ronald Cotton case explained: 19:21–22:53
• Memory contamination, science & law: 23:14–32:43

3. Flirting, Connection, and Social Norms

Guest: Francesca Hogi (Dating & Relationship Coach, TED speaker)

• Flirting Beyond Romance

  • Flirting is more than seeking romance; it’s a way to make others feel "seen, special, and acknowledged" (41:13–41:16).
  • Francesca sees it as an everyday tool for building connections—at the coffee shop, with strangers, or friends.

• Practical Flirting Styles: (41:19–43:35)

  1. Attentiveness/Curiosity: Ask genuine questions, listen actively, notice details.
  2. Compliments: Be specific and sincere, focus on things within the other’s control (e.g., style, rather than body).
  3. Playfulness: Playful jokes, lightness, or even a simple eyebrow raise.

• Navigating Boundaries & Respect

  • The line between flirting and being “creepy” comes down to intention, context, and reading the other person’s reactions (44:06–46:03).
  • Men in particular may fear being inappropriate; Francesca advises shifting from transactional approaches ("hitting on" someone for an outcome) to simply creating pleasant, human moments.

• Memorable Moment & Quote:
  Francesca describes a New York sandwich shop encounter, splitting sandwiches with a stranger—a harmless, enjoyable moment of connection (47:27–48:46).

  “Sometimes those interactions are going to turn into more, and sometimes they’re just going to be a beautiful moment in time. And either way, that’s valuable.”
  — Francesca Hogi (48:37)

• Flirting as a Lost Social Skill

  • Post-pandemic, Francesca argues flirting can help combat isolation and loneliness, reminding us to look up from our phones and truly connect (50:33–51:54).

Timestamps:

• Redefining flirting: 36:36–41:16
• Three styles explained: 41:19–43:35
• Setting boundaries & avoiding creepiness: 44:06–46:03
• Flirting stories and building connection: 47:27–48:46
• Social skills and loneliness: 50:33–51:54

Notable Quotes

• On Diversity of Mind’s Eye:

  “Our minds are black boxes to each other. I think if we actually switched consciousnesses…we’d be totally lost in the wilderness.”
  — Alex Rosenthal (01:37)

• On Memory & Justice:

  “The modern day legal system is placing a demand on memory that memory was never designed to do.”
  — John Wixted (27:15)

• On Flirting & Connection:

  “Flirting is simply words and actions that are intended to make another person feel seen, special, and acknowledged.”
  — Francesca Hogi (41:13)

• On Embracing Human Difference:

  “If we stop trying to shove all of humanity into a box…instead just say, there’s a lot of different ways of being…that just has huge implications for how we think about ourselves and how we work together and how we learn.”
  — Alex Rosenthal (12:34)

Takeaways

• Human perception is stunningly diverse, often in ways we assume are shared and “normal.”
  Learning about conditions like aphantasia or the realities of memory forces us to consider the hidden spectrum of human minds.

• Memory is not a record, but a living, changing process—especially vulnerable in high-stakes settings like criminal trials.
  New scientific insights demand changes in how our justice system treats eyewitness evidence.

• Small, intentional acts of connection—like flirting—can enrich daily life and help us break out of isolation, building bridges even when outcomes are uncertain.
  Flirting is a skill for everyone, not just those seeking romance.

Suggested Listening Segments

• Alex Rosenthal on aphantasia and mind’s eye: 01:37–13:32
• John Wixted on memory fallibility & justice: 15:45–33:39
• Francesca Hogi on the art & purpose of flirting: 36:02–52:32

For more, watch TED talks by Alex Rosenthal, John Wixted, and Francesca Hogi at ted.com. Connect with Manoush Zomorodi and TED Radio Hour for extended interviews and behind-the-scenes conversations.