Psychogenic nonepileptic seizures are episodes of movement, sensation, or behaviors that are similar to epileptic seizures but do not have a neurologic origin; rather, they are somatic manifestations of psychologic distress. Patients with psychogenic nonepileptic seizures frequently are misdiagnosed and treated for epilepsy. Video-electroencephalography monitoring is preferred for diagnosis. From 5 to 10 percent of outpatient epilepsy patients and 20 to 40 percent of inpatient epilepsy patients have psychogenic nonepileptic seizures.
Unformatted text preview: 373. Explain the function of the auditory tube. The function of the auditory tube ( Eustachian tube ) is to maintain equal air pressure on both sides of the tympanic membrane, which is necessary for normal hearing. 374. Distinguish between the osseous and the membranous labyrinths.
The vestibulocochlear nerve is a sensory nerve that conducts auditory and vestibular information from the inner ear to the brain.Auditory functions manage hearing, while vestibular functions serve to maintain balance and awareness of the body's position.nce referred to as the auditory or acoustic nerve, the vestibulocochlear nerve begins in the medulla oblongata, or the lower portion of the brain stem. It then travels alongside the facial nerve and enters the inner ear through the internal acoustic meatus, a hole in the temporal bone of the skull.