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Functions Of Human Sensory Biology

Decent Essays
Sensory Biology Lab 6

Name: Dominic Siaw
Biology 132
T.A: Marian Wahl
Date Performed: 4/7/15
Date due: 4/14/1
Abstract
In this laboratory students will perform various experiments to demonstrate various properties of human sensory biology. Students worked in pairs and performed 5 experiments. These experiments were based on touch receptors, temperature receptors, two point discrimination on the skin, locating distance from the fovea to our blind spot and measuring visual activity. T-test was performed and the results explained that there is no significant difference in how the body adapts to external stimuli.
Introduction
Sensory Biology is being able to perceive stimuli from the environment. The most common
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Examples include eyes, nose and skin. The eyes are the main sensory organs being tested in this experiment. Eyes allow us to detect visible light which is reflected on images and allows us to see them. (McMillan 35)
In this laboratory, an experiment will be conducted to explore the human senses. Most importantly the senses of touch. Various parts of the body will be tested to see how the body adapts to external simuli. These external stimui will be a coin touch, temperature and a touch from a two point discrimination. Also the ability to read from afar will be tested using the Snellen examination chart.

Experimental Procedure
The first experiment was an exercise based on adaptations of touch receptors. One student obtained a coin and a stop watch. The other student was the test subject. The test subject placed his/her palm-down on the desk. The test subject closed their eyes and a coin was placed on the back of the test subject’s hand (lower side of right most knuckle) and the stop watch was started. The clock was stopped when the test subject stopped feeling the coin. The time was recorded. The same procedure was repeated but during these times the coin was placed at 4 different locations of the hand. The time for each adaptation was recorded. This test was performed twice for each location and time for each adaptation was recorded. The T-test was then calculated to see if there is a statistically
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