Cerebrospinal fluid (CSF), clear, colourless liquid that fills and surrounds the brain and the spinal cord and provides a mechanical barrier against shock. Formed primarily in the ventricles of the brain, the cerebrospinal fluid supports the brain and provides lubrication between surrounding bones and the brain and spinal cord. When an individual suffers a head injury, the fluid acts as a cushion, dulling the force by distributing its impact. The fluid helps to maintain pressure within the cranium at a constant level.
https://www.britannica.com/science/cerebrospinal-fluid
<span>This would be a paired-samples t test. This type of test allows for the researcher to determine whether or not the dependent variable has a difference from the control that is statistically significant, or if the difference is due to random chance or some other intervening variable not studied.</span>
Servers depression.....from the highs of mania on one extreme, to the lows of depression on the other.
