What is the sensitivity and frequency range of each human sense?

•  Vision: visible light goes from 390nm to 750nm. [1]
  
• Hearing: audible range of frequencies is from 20Hz to 20,000 Hz. [2]
  
  
• Touch (somatosensory): This begins to get much more difficult to put in terms of bandwidth.  For touch there are 3 different types, movement, pressure, and chemical/temperature. [3]
• Movement/Pressure (mechanoreceptor): the main thing for this that you can measure in bandwidth is texture (when you are running your finger over a surface for example).  Texture will cause your skin to feel vibrations the main range for those vibrations are from 50 Hz to 300 Hz.
• Temperature (thermoreceptor): sensitive across all ranges until the nerves die from either the cold or the heat.
• Smell (olfaction): Its hard to quantify smell as a bandwidth.  However humans have have about 10 cm2 (1.6 sq in) of olfactory epithelium, whereas some dogs have 170 cm2. [4]
  
  
• Taste (gustatory): Very hard to quantify, there are a variety of different types of tastes. [5]

[1] http://en.wikipedia.org/wiki/Visible_spectrum
[2] http://en.wikipedia.org/wiki/Hearing_range
[3]http://en.wikipedia.org/wiki/Somatosensory
[4]http://en.wikipedia.org/wiki/Olfaction
[5]http://en.wikipedia.org/wiki/Gustatory

This was an answer I wrote on Quora.