Brain Science with Ginger Campbell, MD: Neuroscience for Everyone BS 133 Counting Neurons with Dr. Suzana Herculano-Houzel
Apr 26, 2017
Dr. Suzana Herculano-Houzel, a groundbreaking Brazilian neuroscientist known for her innovative methods in counting neurons, reveals that the average human brain contains only 86 billion neurons, debunking the long-held myth of 100 billion. She discusses the major differences in neuron counts across species and challenges established beliefs about brain functionality. The conversation highlights the impact of diet on cognitive evolution and emphasizes the significance of collaboration and mentorship in advancing scientific knowledge.
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The 10% Brain Myth
- Susana Herculano-Houzel worked at a science museum and discovered that 60% of college-educated people believed they only used 10% of their brain.
- This encounter sparked her interest in the origin of this myth and the actual number of neurons in the human brain.
Uncited Brain Statistics
- The numbers of neurons and glial cells in the human brain were widely accepted without proper citation.
- Herculano-Houzel's investigation revealed that the actual composition of brains was largely unknown.
Debunking the Reptilian Brain
- The concept of a "reptilian brain" within mammals is a misconception.
- Mammals and reptiles share a common ancestor but did not descend from one another, and both possess a pallium.
