This process is "all-or-nothing"—the signal doesn't get "stronger" with more stimulus; instead, the neuron fires more frequently . How We Study the Brain's Electricity
The Spark of Life: Electrophysiology of the Neuron At its core, the brain is an electrical machine. While we often think of thoughts as abstract, they are physically powered by the movement of charged ions across cellular membranes. is the study of these electrical properties, allowing us to understand how cells communicate, how disorders arise, and how the brain processes information . The Resting State: A Battery Ready to Fire Electrophysiology of the Neuron
. This negative charge inside the cell is created by an imbalance of ions—specifically sodium ( Na+cap N a raised to the positive power ) and potassium ( K+cap K raised to the positive power )—regulated by specialized pumps and channels. The Action Potential: The "All-or-Nothing" Signal is the study of these electrical properties, allowing
Researchers use several cutting-edge techniques to "listen" to these electrical conversations: Unlocking Brain Function, One Neuron at a Time One Neuron at a Time