Examlex
Describe the changes in brain activity during the processing of memories that occur in old age.
Active Ingredient
The component of a medication, herb, or concoction that is biologically or pharmacologically responsible for its effects.
Inhibitory Neurotransmitters
Neurotransmitters that decrease the probability of the neuron firing action potentials, thereby reducing neural activity.
Excitatory Neurotransmitters
Chemical messengers in the nervous system that increase the likelihood that a neuron will fire an action potential.
Melatonin
A hormone produced by the pineal gland in the brain, responsible for regulating sleep and wake cycles.
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