Another action potential can be produced, but only if the stimulus is greater than the threshold stimulus. 1  corresponds to the period when the potassium channels are open (several milliseconds) 2  the nerve cell membrane becomes progressively more 'sensitive' (easier to stimulate) as the relative refractory period proceeds.
According to the International Banana Association, an average-sized banana weighs 120 grams. I'm assuming this does not include the peel because the discussion is in the context of nutritional information. + 78 others found this useful.
One large banana (8 to 9 inches long) will have 31 grams effective (net) carbohydrate, 3.5 grams fiber, 17 grams of sugar, and 121 calories. As you can see, that's double the 1/2-cup serving, which is why it's a good idea for low-carb dieters to stick to the smaller amount.