Overturning Theories in Neurobiology

Maura C. Flannery
1985 The American history teacher  
Although we really know very little about the living world, our ignorance is nowhere more profound than when it comes to the nervous system. How is visual perception created? What is a memory? How do brain cells come to organize themselves correctly during development? We cannot answer any of these questions adequately, and since our knowledge of the nervous system is so inadequate, the theories we develop are very tentative. The fact that theories in this field are constantly being toppled as
more » ... y being toppled as new evidence becomes available is a good indication of the depths of our ignorance. But this situation is exciting rather than depressing. The nervous system is full of surprises to excite us and our students. For this column I've selected a few items that I find particularly intriguing.
doi:10.2307/4448066 fatcat:mgkdxa5kb5fpvmocjp2vb5nmqu