As early as the fourth week, students began recording electrical responses from inside a cell. These electrical responses span a wide range from repetitive all-or-none action potentials to the small electrical signals generated by a single active synapse in the act of transferring information from cell to cell.

One student illustrated the concept of threshold with this recording. Threshold and resting potential are among the essential ideas in the course that become immeasurably clearer as students explore them in the laboratory.

William Catterall, Bill Moody

Neurobiology 301 Lab