List four responses to sympathetic stimulation and four responses to parasympathetic stimulation. Beth wears her hair in a tight ponytail. At first her tactile receptors are sensitive and she feels the pull from her hair, but after a while she no longer feels it. Explain the loss of sensation. Why does a cold affect your sense of smell? Explain how children have more middle ear infections than adults. Discuss the differences between conduction deafness and nerve deafness.