Exam 1 Flashcards
Audiology
PIE = Prevention, Identification and Evaluation of hearing aids
selection and evaluation of hearing aids
habilitation/rehabilitation of individuals with hearing impairment
Audiologist
assessment and habilitation/rehabilitation of persons with auditory and vestibular impairments and to the prevention of these impairments
An audiologist is…
autonomous practice
promote healthy hearing, communication competency, quality of life for persons of all ages through the prevention, identification and assessment and rehabilitation of hearing , auditory function, balance and other related systems
Raymond T Carhart
considered the father of audiology
developed strong audiology curriculum at Northwestern University in the 1940s
Audiologist responsibility:
- integrity and function of peripheral hearing system
- integrity and function of auditory pathways and processing ability of complex stimuli
- effect of hearing loss on patient and patient’s family
- includes self image as well as functional effects
- effect of hearing loss on patient’s academic and social standing and success
- could ultimately have far reaching implications for a person’s success and their affect on others
Why audiology?
- more than 48 million ppl in the US with hearing impairment
- hearing impairment affects children AND adults
- impact is significant
- “invisible” handicap
Examples of where audiology is practiced
- medical, pediatric, rehabilitative/dispensing, education, industrial
Most hospitals employ between __ and __ audiologists
1 and 4
What is the fastest growing employment setting?
private practice
Where is the growing need for audiology?
College and University
growing need for PhD’s
True or False: Doctoral degree required as entry-level preparation
True
Audiologists work with ____ NOT ____
people; ears
Psychological sound:
an auditory experience (“I hear it, it is too loud/hard”
Physical sound:
a series of disturbances molecules within an elastic medium such as air which are propagated through that medium
Essence of sound:
motion; specifically vibration
Vibration:
refers to the mechanical oscillation about an equilibrium point
For sound to occur:
Source, Force, Medium
Source:
something to be disturbed
Force:
something has to disturb it
Medium:
something has to carry the disturbances
What happens when air molecules are displaced?
Pressure waves occur; compressions (peaks); refractions (valleys)
Sinusoidal Motion:
most fundamental form of vibration
Pendular Movement
Most fundamental form of vibration:
sinusodial motion
Complex Periodic:
sound that is composed of many sine waves with different frequencies, levels and times (Unit: pascals (Pa)/ Micropascals
Complex Aperiodic:
sound is composed of random vibration patterns (noise)
Amplitude:
quantity or magnitude of sound
Frequency:
the number of cycles of vibration that occur in one second
Cycle:
one complete period of compression and rarefraction of a sound wave
Phase:
point of time of cycle.
Where an object is in its cycle of vibration
Phases (hint: unit circle):
0,90,180,270,360
Duration:
how long the sound lasts
(unit: second/milliseconds)
Sound Pressure Level:
parameter used most often to describe of the physical properties of the level of sound waves
(unit: Pa/Micropascals)
Complex Periodic Sound:
sound that is composed of many sine waves with different frequencies, level and times
Waveform:
moment by moment displacement of vibration body
Amplitude on Y-Axis
Frequency on X-Axis
Spectrum:
the distribution of frequencies and their magnitude in a sound
