Donald Iain MacDonald Profile picture
Neuroscience researcher @NIH. EMBO Fellow & Branco Weiss Fellow. Formerly @UZH_en @ucl @StJohnsOx. Somehow a postdoc. I work on pain. Tha Gàidhlig agam.
May 31, 2018 5 tweets 2 min read
Some sauropod dinosaurs had sensory afferent neurons over 50m in length. So if a sauropod accidentally touched a hot stove with its tail, it would take the brain over 25 seconds to realise it was burning itself (assuming C fibre conducting at 2 m/s).… #pain Presumably evolution figured out a way of being quicker than this - perhaps by using fast myelinated A fibres or very fat C fibres for nociception instead.