What is the Muller Lyer Illusion, and why is it important in the field of psychology?
The Muller Lyer illusion is a comparative psychophysics tests that examines how our brain perceives illusions of figures. Two figures are compared to each other - one with "wings" pointing outwards with a line, and the other line with wings turning in ward. The point of the Muller-Lyer illusion is to see if the person observing the two figures can distinguish which figure is longer. Most people perceive one figure to be larger than the other - but the reality is that both figures are the exact same length. It is the illusion of the Muller-Lyer figure that tricks our brain into thinking we have perceived different lengths based on the winged tips, when the reality is distorted.
What is a gaussian distribution, and why is it so important to understand?
A gaussian (or normal distribution) is a "bell curve" in laymen's terms. Essentially, it is a set of values (with a mean and a standard deviation) that allows us to measure a population or sample - more specifically, predict behaviors of populations in a "normal" condition. We can also tell if a person lies outside the distribution, or if responses seem to be outliers or abnormal to the normal curve.
What are some potential problems that may arise if the blood brain barrier works incorrectly?
For a correctly working blood brain barrier, we must have a constantly regulated membrane. What this means is that crucial ions, such as sodium, potassium, and other necessary ions must flow through in a specific ratio through the barrier. Too many ions, or influx of toxic substances and hormones will lead to the blood brain barrier being compromised.