Cajal's Neuron Doctrine

Cajal's Neuron Doctrine is the idea that the brain is made up of individual nerve cells called neurons, which are like tiny, separate units. These neurons communicate with each other through specialized connections called synapses, rather than merging into a single continuous network. This concept was crucial in understanding how information flows in the brain and nervous system, emphasizing that neurons are discrete entities that send signals to each other. Cajal's work helped establish the modern understanding of brain structure and function, highlighting the importance of individual neurons in processing thoughts, emotions, and actions.