Dec '25 • 🧠 Mindset
The human mind
Neuron count: about 86 billion neurons.
Energy use: roughly 20 watts—about the power of a dim light bulb.
Glial cells: supportive stars of brain signaling.
Plasticity: brains rewire with learning and experience.
Adult neurogenesis: new neurons can form in the hippocampus.
Memory is fallible: recall can be distorted.
Sleep: essential for memory and toxin clearance.
Smell → memory: scents strongly cue emotions and memories.
Neurotransmitters: dopamine, serotonin, acetylcholine shape mood and learning.
Brain networks: default mode, salience, and control networks coordinate thinking.
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The human mind
