Write a scientific question that the authors of this paper likely proposed at the beginning of their investigation. Then write two statements that provide alternative hypotheses that answer this question and that form the basis for the experiment that the authors carried out. (A is already answered, just need help with B)​

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.