Ethan Newnham’s well attended lecture this week was about “Mapping The Mind”. Always a highlight of the week, this installment of the series “The Brain and its Mysteries,” was again an engaging and insightful exploration of the brain’s complexities, presented with a mix of historical context, cutting-edge research, and a touch of humor. As someone in the audience, I found Ethan’s presentation both illuminating and accessible, showcasing his deep knowledge of neuroscience and his ability to communicate intricate concepts clearly.
Ethan began by inviting us to appreciate the beauty of the brain through images from the Florey Institute’s Neuropix People’s Choice Award, immediately drawing us into the world of neuroscience by emphasizing the aesthetic as well as the scientific. This set the tone for a lecture that was as visually stimulating as it was intellectually enriching.
He then guided us through a fascinating historical journey, starting with ancient Egypt, where the brain was first documented, though it was the heart that was considered the center of thought and emotion. Moving to ancient Greece, Ethan highlighted how Hippocrates began to shift this perspective, associating the brain with intelligence.
The discussion on Franz Joseph Gall and phrenology was particularly intriguing, as Ethan explained how this pseudoscience, despite its lack of empirical support, was an early attempt to link brain regions to specific functions.
The lecture’s highlight was Ethan’s explanation of the work of Wilder Penfield, a Canadian neurosurgeon whose pioneering brain mapping efforts in the 1930s and 40s led to the creation of the “homunculus” – a distorted representation of the human body based on the brain’s allocation of sensory and motor functions. Ethan’s description of these strange, exaggerated figures, used even today to teach neuroscience, was both amusing and thought-provoking.
As the lecture progressed, Ethan transitioned to modern techniques like “functional Magnetic Resonance Imaging” (fMRI) and connectomics, showing us how today’s neuroscientists map brain activity and connections in ways far beyond the capabilities of early researchers. The “brain dictionary” video, which illustrated how language activates widespread brain regions, was particularly striking, underscoring the complexity and interconnectedness of our mental processes.
In conclusion, Ethan reinforced the idea that the brain remains one of the final frontiers of scientific discovery, full of mysteries yet to be unraveled. His presentation was not just informative but also inspiring, leaving us with a deeper appreciation of the brain’s wonders and the ongoing efforts to understand it.
Navigate a 3D model of The Brain Dictionary.
You can vote in The Florey Institute’s Neuropix People’s Choice Award until 16 August 2024.
Ethans presentation slides can be found in the course resources for The Brain and its Mysteries.