Episode 9: The Sense Census




The Wonder of Reality show

Summary: With the eye taking <a title="Episode 7: The Eye and Colour Vision" href="http://thewonderofreality.com/episode-7-the-eye-and-colour-vision/">two</a> <a title="Episode 8: The Eye and How We See" href="http://thewonderofreality.com/episode-8-the-eye-and-how-we-see/">episodes</a> to cover, we wanted to discuss the other senses in this, the third episode of <a title="Miniseries 2: How Humans are Fallible" href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/">"How Humans are Fallible"</a>. Our hearing allows us to detect threats from far away, our sense of smell tells us about threats that we can't hear or see, touch includes pain and heat perception, and taste is a complicated tangle of sensations. In researching this episode we discovered that we don't have just five senses, but an entire multitude. Use nearly all of them in this episode. Corrections/Clarifications: In the episode Travis says it takes 0.2 seconds for a sound to hit our left ear and then the right ear. In actually it's only 0.2 milliseconds between the two ears detecting the same sound. Links: Our <a href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/episode-9-the-sense-census-show-notes/">Show Notes</a> for the episode covering <a href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/episode-9-the-sense-census-show-notes/#Hearing">Hearing</a>, <a href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/episode-9-the-sense-census-show-notes/#Smell">Smell</a>, <a href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/episode-9-the-sense-census-show-notes/#Touch_and_How_We_Have_More_than_Five_Senses">Touch (and How We Have More than Five Senses)</a>, <a href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/episode-9-the-sense-census-show-notes/#Taste">Taste</a>, <a href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/episode-9-the-sense-census-show-notes/#Caring_for_Your_Human_The_Senses">Caring for Your Human: The Senses</a>, <a href="http://thewonderofreality.com/episode-guide/miniseries-2-how-humans-are-fallible/episode-9-the-sense-census-show-notes/#Miracle_Berries_Alcohol_on_the_Skin_and_Wrap-up">Miracle Berries, Alcohol on the Skin, and Wrap-up</a> How our two ears <a href="http://www.hhmi.org/senses/c220.html" target="_blank">detect the source of sounds</a> <a href="http://www.engineeringtoolbox.com/sound-intensity-d_712.html" target="_blank">Sound intensity and logarithmic hearing</a> Here are some <a href="http://www.industrialnoisecontrol.com/comparative-noise-examples.htm%20" target="_blank">examples of different volume levels</a> We can hear from <a href="http://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml" target="_blank">20 to 20,000 Hz</a> Humans hear <a href="http://www.dliengineering.com/vibman/logarithmicfrequencyscaling.htm%20" target="_blank">logarithmic pitch and we've based our music around it</a> Pianos are a great example of <a href="http://en.wikipedia.org/wiki/Piano_key_frequencies" target="_blank">logarithmic frequencies</a> Follow <a href="http://www.rep-am.com/fungames/hearing/%20" target="_blank">this link</a> to test what frequencies you can hear <a href="http://www.macalester.edu/academics/psychology/whathap/ubnrp/smell/nasal.html" target="_blank">Anatomy of the olfactory sense</a> More on <a href="http://faculty.washington.edu/chudler/nosek.html" target="_blank">what we can smell </a> How Stuff Works on <a href="http://science.howstuffworks.com/life/human-biology/question139.htm%20" target="_blank">how our noses work</a> <a href="http://www.macalester.edu/academics/psychology/whathap/ubnrp/smell/odor.html" target="_blank">Odour fatigue</a> and why it occurs Touch is a complicated sense because <a href="http://science.howstuffworks.com/life/question242."></a>