If You Were Hooked Up to Electrodes That Gave You

question 194

Multiple Choice

If you were hooked up to electrodes that gave you a reading of only your eye movements (an electroocculogram, or EOG) during the night, would you be able to learn anything about your sleep cycles, and why?

• A) No, because an electroencephalogram (EEG), which is recorded by scalp electrodes, is needed to monitor sleep states.
• B) No, because both an EEG and an electromyogram (EMG) are needed to monitor sleep states.
• C) Yes, because an EOG would tell you if your eyes were open.
• D) Yes, because the EOG would measure jerky eye movements that characterize one type of sleep, called REM sleep.
• E) No, because your breathing rate is also a factor and would not be monitored by an EOG.

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Definitions:

Glial Cell

A type of cell in the nervous system that supports, nourishes, and protects neurons, playing a crucial role in brain function.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell.

Synaptic Vesicle

a small, spherical sac containing neurotransmitters, found in the nerve endings, crucial for transmitting signals between neurons.

Myelin

A fatty substance that surrounds neurons' axons, facilitating faster transmission of electrical signals.