Tutor profile: Amritha H.
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.
Subject: Cognitive Science
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.
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