Explore HowFastDoesYourBrainReacttoStimulusLabHandout

7/23/2019 Explore HowFastDoesYourBrainReacttoStimulusLabHandout

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Name __________________________ Period ________ Date_________________

Explore - How Fast Does Your Brain React to Stimulus Lab

In today’s lesson, you were introduced to reflexes and reactions times. This lab will be

broken up into two experiments. In experiment one, we will explore the concept of

reaction times together . In experiment two, you will be given an opportunity to

elaborate on the topic by designing an experiment of your choice, where you will be

able to test different variables that could affect an individual's reaction time.

Experiment One: Visual vs. Auditory Stimulus:

Research Question

How will telling a student when you are

releasing the ruler (auditory stimulus)

affect reaction time versus not telling the

student (visual stimulus) when the ruler is

being released ?

Hypothesis

If a student is told the ruler is being

released, then the student will have a

___________________ (slower/faster)

reaction time.

Procedure:

Visual Stimulus

1. Subject one dangles dominant hand off the edge of a table.

2. Subject two holds a 30 centimeter (12-inch) ruler between two fingers at the 30

cm mark, having the 0 mark level with subject one’s index finger.

3. Subject two tells subject one to grab the ruler as fast as possible, when they

SEE it being released.

4. Record the centimeter measurement on chart.

5.

Repeat this trial three times, then switch roles.



Auditory Stimulus

1.

Subject one dangles dominant hand off the edge of a table.

2. Subject two holds a 30 centimeter (12-inch) ruler between two fingers at the 30

cm mark, having the 0 mark level with subject one’s index finger.

3. Subject two tells subject one to grab the ruler as fast as possible, when they

HEAR the word “release” being said.

4.

Subject two simultaneously says “release” and lets go of the ruler.

5. When student one grabs the ruler, record the centimeter measurement in chart.

6. Repeat this three times. Then switch roles.

7.

Use conversion chart to find reaction time in seconds for auditory and visual

stimulus

Data:

Subject One Auditory Stimulus Visual Stimulus

Trial 1 (cm) (cm)

Trial 2 (cm) (cm)

Trial 3 (cm) (cm)

Average: (cm) (cm)

Reaction Time in Seconds: (sec) (sec)

Subject Two Auditory Stimulus Visual Stimulus

Trial 1 (cm) (cm)

Trial 2 (cm) (cm)

Trial 3 (cm) (cm)

Average: (cm) (cm)

Reaction Time in Seconds: (sec) (sec)



Results:

Conclusion: (Was your Hypothesis supported?)

Documents

Explore HowFastDoesYourBrainReacttoStimulusLabHandout