In Your Ph

Multiple Choice

In your Ph.D.research,you use thin slices of brain tissue to study neuronal signaling.You attach an electrode to a single neuron,but cannot detect any activity.What is the most likely explanation?

A) When you sliced the brain,you disconnected the cell from its dendrites.
B) Neurons are not electrically active -- you should be recording neuroglia instead.
C) When you sliced the brain,you disconnected the cell from its neuroglia.
D) Excessive myelination is blocking inputs to the cell.