Frog brains get busy long before they’re fully formed. Just a day after fertilization, embryonic brains begin sending signals to far-off places in the body, helping oversee the layout of complex ...

KUFFLER et al. 1–3 have shown that in the frog there are two very distinct types of skeletal muscle fibres; one, the more common, is capable of generating spikes and giving twitches; while the other ...

Frog nerve-muscle preparations were quick-frozen at various times after a single electrical stimulus in the presence of 4-aminopyridine (4-AP), after which motor nerve terminals were visualized by ...

The brain plays an active role much earlier than previously thought. Long before movement or other behaviors occur, the nascent brain of an embryonic frog instructs normal muscle and nerve patterning ...

THE following interesting observation has been noted during class experiments on frog nerve-muscle dissections, and has been confirmed by later experiments. Due to shortages of frogs during the War, ...