Neuroscience

Key people

• Tracy PutnamMedical researcher (1894-1975)

Timeline

• 1700 BCManuscripts dating to 1700 BC indicate that the Egyptians had some knowledge about symptoms of brain damage.

Read

• Annual Review of NeuroscienceW. Maxwell Cowan · 1978Book
• The student's guide to cognitive neuroscienceJamie Ward · 2006Book
• Foundations of Behavioral NeuroscienceNeil R. Carlson · 2010Book
• Neuroscience for dummiesFrank Amthor · 2011Book

Watch

• Uncovering the brain's biggest secret - Melanie E. PefferYouTube
• 2021's Breakthroughs in Neuroscience and Other BiologyYouTube
• This Talk is Literally Brain Science! | Sophie Scott | TEDxNewcastleYouTube
• Biggest Breakthroughs in Biology and Neuroscience: 2024YouTube
• What is Neuroscience?YouTube
• Cognitive Neuroscience - The Human Brain (Science Discovery film) by Encyclopedia BritannicaYouTube
• Improving our neuroplasticity | Dr. Kelly Lambert | TEDxBermudaYouTube
• You can grow new brain cells. Here's how | Sandrine Thuret | TEDYouTube
• 10-Minute Neuroscience: NeuronsYouTube
• 10-Minute Neuroscience: DepressionYouTube

Listen

• Neuroscience: Amateur HourNeuroscience: Amateur HourPodcast
• Huberman LabScicomm MediaPodcast
• Neuroscience of EverythingDr Nand Muley, Ph.D.Podcast
• That Neuroscience GuyOlav KrigolsonPodcast

Voices to follow

• Geoffrey Hinton@geoffreyhinton · XBritish-Canadian computer scientist and psychologist
• Grace W. Lindsay@neurograce · XNeuroscientist
• Karel Svoboda@svoboda314 · XNeuroscientist
• Samuel Stuart@samstuart87 · XBritish neurologist

Debates

• Is consciousness purely a product of brain activity or something more?One view: Consciousness emerges solely from complex neural networks and computations within the brain. · Another: Consciousness may involve non-physical aspects or emergent properties not fully explained by current brain science.Open question
• To what extent is human behavior determined by genetics versus environment?One view: Genetic predispositions play a primary role in shaping personality, intelligence, and mental health. · Another: Environmental factors, experiences, and learning significantly influence and modify genetic potentials throughout life.Open question

Glossary

• NeuronA nerve cell that transmits electrical and chemical signals in the brain and nervous system.
• SynapseThe tiny gap between two neurons where signals are transmitted from one to the other.
• NeurotransmitterA chemical messenger that carries signals across a synapse between neurons.
• CortexThe outer layer of the cerebrum, responsible for higher-level thought, language, and memory.
• AmygdalaA brain region involved in processing emotions, especially fear and pleasure.
• NeuroplasticityThe brain's ability to change and adapt its structure and function in response to experience.

Careers

Roles this can lead toward

Threads 13

Where this connects to other fields — and why it's worth knowing.

• Poetry Literature

  Some brain-damaged patients can't put together a single spoken sentence, yet they can still recite a whole poem or sing a song. That's because rhythm and rhyme travel a different route through the brain than everyday talking. Poetry survives in the mind after plain speech has been knocked out.

• Latitude, Longitude, and GPS Geography

  Deep in your brain sit special cells that draw a live map of wherever you are, your own built-in GPS. But like any muscle, if you never use it, it weakens. Lean on your phone's GPS for every turn and that inner mapmaker may quietly start to fade.

• Language Acquisition Literature

  There's a closing window in childhood for wiring up a first language, and tragic cases of neglected 'feral children' show what happens if it's missed: the brain never fully learns to speak. Language isn't just poured in anytime; the brain has to build the wiring while it's still young enough. Miss that period and no amount of teaching fully fixes it.

• Literacy & Numeracy Education

  When you learned to read, your brain didn't grow a new reading part, it stole one. A patch of visual cortex that evolved to recognize faces and objects gets hijacked to recognize letters instead. That's why a reading brain and a non-reading brain are physically wired differently: culture reached in and repurposed the hardware.

• Human Development & Readiness Education

  A kid's brain doesn't grow by just piling on more and more connections. It first overbuilds a wild tangle of them, then aggressively prunes the ones it doesn't use, like a sculptor chipping away stone. So growing up and learning is as much about cutting away as it is about building up.

• Contested Memory & Heritage History

  Here's the wild part about memory: every time you pull one up, your brain slightly rewrites it before filing it away again, so 'remembering' quietly edits the past. A country retelling its origin story does the identical thing, just with millions of people at once. Both a person and a nation are constantly reshaping a past that never sits perfectly still.

• Famous Artists and Paintings Arts

  A cartoon caricature exaggerates a big nose or huge chin, and your brain loves it. That's because the vision part of your brain is already wired to notice exactly those features, so the artist is hitting a built-in sweet spot, like a flavor that's sweeter than any real fruit.

• Populism and Nationalism Politics

  Oxytocin gets called the 'bonding hormone' because it makes you trust and love people close to you. But the same chemical also makes you more suspicious of outsiders. So the warm glow of belonging to your group has a built-in us-versus-them edge.

• The Loneliness Epidemic Sociology

  Getting rejected or left out lights up the very same brain spot as a physical burn or bruise. That's why being excluded genuinely hurts, and it's also why a painkiller like Tylenol can actually dull the sting of heartbreak a little.

• Utilitarianism vs Kantian Ethics Philosophy

  Imagine pushing one man off a bridge to save five people. Brain scans show that thought lights up your emotion centers, screaming 'no', while cold calculation fires a different, more logical part. So a giant moral debate might really be two parts of your own brain arguing.

• Countries, Capitals & Continents Geography

  Memorizing where countries sit on a map uses the same brain cells that remember where you left your keys, special 'place' and 'grid' cells in a region called the hippocampus. Your brain's built-in GPS, evolved for finding your way home, gets borrowed to learn the world map.

• The Trolley Problem Philosophy

  Most people say pulling a lever to divert a runaway trolley and kill one person to save five is fine, but shoving a stranger off a bridge to stop it feels horrible, even though the body count is identical. Brain scans show why: the shove lights up your emotion circuits, while the lever runs on cold calculation. Your 'inconsistent' answers are really two parts of your brain arguing.

• Plastic Pollution Environment

  Your brain has a strict security gate that blocks almost every molecule from getting in. Scientists have now found tiny plastic bits slipping past it. Evolution walled off the brain harder than anything, and our plastic still got through.