SPLH 620 Exam 2 Questions and Answers (Graded A+)

middle ear - ANSWER-The middle ear amplifies signals The middle ear transforms signals Transforms acoustic signs to mechanical signals Composed of the tympanic membrane, oval window, and ossicles (malleus, incus, stapes) Air filled Inner ear - ANSWER-The inner ear transforms signals Transforms mechanical signals to chemoeletric signals The inner ear represents sound frequencies Composed of the cochlea and the vestibular system Fluid filled Outer ear - ANSWER-Composed of the pinna and ear canal Collects sound and transmit sound vibrations from the pinna to the tympanic membrane Membrane - ANSWER-Tympanic membrane, oval window, round window oscicles - ANSWER-Malleus, incus, stapes Where does the auditory pathway become bilateral? - ANSWER-Superior olive Spatial Hearing - ANSWER-ITD: the difference in arrival time of the same sound at the two ears ILD: the difference in level (intensity) between a sound arriving at one ear versus the other Dual Stream model - ANSWER-This model shows the two different streams that process speech/language information. One that interfaces sensory/phonological networks with conceptual semantic systems (ventral stream) and one that interfaces sensory/phonological networks with motor-articulatory systems (dorsal) Ventral stream - ANSWER-Speech perception The ventral stream includes phonological and semantic processing, which leads to speech perception. Dorsal stream - ANSWER-Sensorimotor transformation Motor to auditory, auditory to motor Conductive hearing loss - ANSWER-Impaired ability of air-borne vibrations to reach the organ of corti Sensorineural hearing loss - ANSWER-Impaired ability of hair cells or the cochlear nerve to respond Cochlear implants - ANSWER-Microphone collects sound, processing chip converts so