Older Adults.How does this age group influence sensory function?
Decreased hearing acuity, speechintelligibility, and pitch discrimination.. referred to as presbycusis
Low-pitched sounds easiest to hear Difficult to hear conversation over backgroundnoises Difficult to discriminate consonants (f, z, s,th, ch, p, k, t, and g)
Visual changes include reduced visual fields,increased glare sensitivity, impaired night vision, reduced accommodation,reduced depth perception, and reduced color discrimination, due to pupils inolder adult take longer to dilate and constrict secondary to weaker irismuscles.
Color vision decreases because the retina isduller and the lens yellows
Olfactory changes begin around 50 Reduced sensitivity to odors
Small decrease in the number of taste cellsaround 60
Reduced sour, salty, and bitter tastediscrimination
Ability to detect sweet tastes seems to remainin tact
Proprioceptive changes in some older adultsinclude an increased difficulty with balance, spatial orientation, andcoordination.
Cannot avoid obstacles as quickly nor prevent anaccident that may harm them when fast action is necessary
Sometimes experience tactile changes- decliningsensitivity to pain, pressure, and temperature secondary to peripheral vasculardisease and neuropathies.