Columbia College Physiology Sensory Lab (Page 2 of 6) in pdf

Columbia College Physiology Sensory Lab Page 2

Physiology Sensory Lab

Student: _______________________________

Date: ________________________

Activity: Auditory Tests and Experiments

Acuity Test

Have your lab partner pack one ear with cotton and quietly sit with their eyes closed. Obtain a watch or

ticking clock and hold it to your partners unpacked ear. Then slowly move the clock away from the ear

until your partner indicates that he/she can no longer hear the ticking. Record the distance at which the

ticking in inaudible.

Unpacked ear:_____________________________

Packed ear: ______________________________

Weber Test

Obtain a tuning fork and rubber mallet. Strike the tuning fork with the mallet and place the handle of

the tuning fork medially on your partner's head.

Is the tone equally loud in both ears?

If it is equally loud in both ears then the subject has equal hearing or equal hearing loss. If sensineural

deafness is heard in present in one ear, the tone will be heard in the unaffected ear but not in the ear

with sensineural deafness. If conduction deafness is present, the sound will be heard more strongly in

the ear in which there is hearing loss.

Rinne Test

Strike the tuning fork and place its handle on your partner's mastoid process, the bone behind the ear

and slightly lower. Have your partner indicate when he/she can no longer hear the sound. At that point

move the fork with the still vibrating prongs close to his/her auditory canal. If your partner can hear the

fork again (by air conductance) then hearing is not impaired. Repeat for both ears. Record your

observations.

Right ear:_____________________________

Left ear: ______________________________

Columbia College Physiology Sensory Lab Page 2