EDCI 2700 Chapter : Ch 9 And 10 Deafness And Blindness
Document Summary
A hearing loss so severe that the child has difficulty processing linguistic information and that adversely affects educational performance. Difference between deafness and hard of hearing. Deaf: the student is not able to hear even with a hearing aid vision is primary sensory mode for learning and communication. Hard of hearing: significant hearing loss that makes special adaptations necessary students use hearing to understand speech with help of hearing aid. Many persons who are deaf do not view hearing loss as a disability. Audition, the sense of hearing, is a complex and not completely understood process. The auricle funnels sound waves into the auditory canal. Variations in sound pressure cause the eardrum to move in and out. The vibrations of the bones of the middle ear transmit energy to the inner ear. The inner ear is the most critical and complex part of the hearing apparatus. Sound is measured in units that describe its intensity and frequency.
