This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Synaptic potentials can be recorded by 
Select and explain. 
A. Patch clamp technique, B. Voltage clamp technique, C. Microelectrode, D. EEG
C: Microelectrode
Answer: C: Microelectrode 
Explanation: Potential" refers to electrical potential, or voltage, and paicularly to voltage recorded with a microelectrode embedded within neuronal tissue, typically in the brain of an anesthetized animal or within a thin slice of brain tissue maintained in vitro. The electrical activities in the neurons are rapid being measured in milliseconds, and the voltage changes are too small measured in millivolts.........the microelectrode has a tip diameter of less thanone mirometer .....hence it is used to measure the synaptic potential. Ref guyton and hall textbook of medical physiology 12/e p58