Examlex
Which of the following can be used to measure ?
Lethargy
A state of sluggishness, drowsiness, or lack of energy, which can be a symptom of various conditions.
Neurotransmitters
Chemical substances that transmit signals across a synapse from one neuron to another in the brain and nervous system.
Serotonin
A neurotransmitter that contributes to feelings of well-being and happiness, also involved in regulating mood, appetite, and sleep among other physiological processes.
Norepinephrine
A neurotransmitter and hormone involved in the body's fight or flight response, playing a key role in attention and responding actions in the brain.
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