#E1523D
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The gray substance of the medulla oblongata and trapezium Dean, John, M.D, 1864
The principal object in view, in the following memoir, has been to give the entire topography of the medulla oblongata and trapezium, with illustrations from a series of photographs.
(source)
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A Gustotopic Map of Taste Qualities in the Mammalian Brain by Nathan Gray The taste system is one of our fundamental senses, responsible for detecting and responding to sweet, bitter, umami, salty, and sour stimuli. In the tongue, the five basic tastes are mediated by separate classes of taste receptor cells each finely tuned to a single taste quality. We explored the logic of taste coding in the brain by examining how sweet, bitter, umami, and salty qualities are represented in the primary taste cortex of mice. We used in vivo two-photon calcium imaging to demonstrate topographic segregation in the functional architecture of the gustatory cortex. Each taste quality is represented in its own separate cortical field, revealing the existence of a gustotopic map in the brain. These results expose the basic logic for the central representation of taste.
(more here)
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If a baby waited until its brain was fully developed before birth, it would be in the womb for nearly two years. By then, its head would be too large to fit through its mother’s pelvis. So there is a ‘trade-off’, which has enabled humans to keep both their large brains and upright posture: we are born with underdeveloped brains. Although we are born with most of our brain cells, the connections between them are not completed until the age of two.
Photo from: Boston Science Museum
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Your brain
Your brain is amazingly complex and it’s unique – there will never be another one like it. Your brain is made up of billions of specialised cells called neurons. These cells reach out and form thousands of connections with each other forming a complex and constantly changing network. Neurons transmit information using electrical and chemical signals.
Every time you experience something new, your brain changes. The connections, or synapses, between your neurons strengthen or weaken, or new connections can be formed. These changes are the way by which you learn new skills, process information and store memories. We still have much to discover about what the brain does and how it works.Lovely animation from: Who I am?
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My Soul - Katharine Dowson (2005)
Images of the mind in art and science
Deutsches Hygiene-Museumvia: eyemagazine
