Nerves Study: Sense of Touch, Finding Your Detection Threshold

How sensitive is our skin to touch? Are all parts of our skin equally sensitive? The sensitivity can be easily measured using Von Frey Hairs. Once assembled (directions included) they can be reused for years. 


Questions Answered:

  • How can skin's sensitivity be measured? 
  • What parts of the skin are most sensitive? 
  • What kind of information can you get from your sense of touch?


Topics Addressed:

  • Skins' sensitivity can be assessed using Von Frey hairs 
  • Different parts of our skin have different sensitivity 
  • Humans gain a great deal of information from touching things


Materials Needed

Assorted thicknesses of fishing line; craft sticks or index cards; tape


Teaching Time 

About 20–30 minutes, longer with included writing assignment


Preparation Time

Assemble the Von Frey hairs (kids can do this)


Answer Key

Yes! Plus extensive teacher notes address the many questions that come up. You shouldn’t have to do outside research on this topic unless you want to. Specific charts and graphic organizers have keys. 


Target Audience

Middle School Students, Ages 11-14


Student Sheets

  • Scaffolded writing prompts & lab reporting 
  • Diagrams for labeling

Nerves Study: Sense of Touch, Finding Your Detection Threshold


    Answer Keys and Teacher Notes address most questions and issues that might arise in this study—you shouldn’t have to do any outside research unless you want to.

    Connect with me: If you have questions or problems, please let me know and I’ll get back to you as soon as I can.


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