题目内容
An () explains various conditions in terms of its measurement, operation, or procedure used to determine its existence in the research setting.
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() is a technique that enables the investigator to collect data on naturally occurring behavior.
()are the mathematical procedures, which are basing on probability theory and are used to describe the likelihood that certain variables predict changes in others, and to infer which conclusions can be legitimately drawn from the data.
From the histological view, the nervous system is made up of neural cells, referring to all of the cells in the nervous system, including ()(nerve cell) and glia (Greek for "glue").
In the chemical synaptic transmission, , receptors as well as their related second messengers are the key components to mediate the signal propagation in the nervous system.
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