The motor cortex sends a message to the spinal cord, which then sends a message to the muscle in the hand/fingers. The visual cortex sends a message to the motor cortex to initiate catching the ruler. After the ruler is dropped, the eye sends a message to the visual cortex, which perceives that the ruler has fallen. Rather, this activity is designed to measure the response time to something that you see.Ĭatching a dropped ruler begins with the eye watching the ruler in anticipation of it falling. The neural pathway involved in a reaction time experiment involves a series of neural processes. This experiment does not test a simple reflex. ![]() The whole process takes between 150 and 220 milliseconds. Your finger muscles move to catch the timer. A nerve signal travels from your eye to your brain then to your finger muscles. ![]() When your friend drops the timer in the experiment, you see it start to move. In this activity, the students participate in a simple ruler drop experiment and learn about the body’s response behind it.
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