Carlos Is Pulling an All-Nighter in Preparation for His Big

question 153

Multiple Choice

Carlos is pulling an all-nighter in preparation for his big psychology test tomorrow. According to the research, what is the result on Carlos's memory when he deprives himself of sleep the night prior to his exam?

• A) Carlos will retain information from staying up all night, but only if his test is early in the morning.
• B) The ability to retain information can be influenced by the presence of sunlight. Thus, if the sun is shining, Carlos will remember more than if it is a cloudy day.
• C) Carlos will actually remember less if he deprives himself of sleep the night before.
• D) Carlos's memory will not be affected in any way assuming he only stays awake for one all-night study session.

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Definitions:

Cardiac Cycle

The sequence of events that occur in a complete heartbeat, including diastole and systole phases.

Isovolumetric Relaxation

A phase in the cardiac cycle where the heart muscle relaxes but the volume of the ventricles does not change because all heart valves are closed.

SA Node

The sinoatrial node, a group of cells in the right atrium of the heart that sets the pace of the heartbeat.

P-R Interval

A measurement in electrocardiography representing the time between the onset of the P wave and the start of the QRS complex, related to atrial depolarization and AV nodal delay.