35 patients with unilateral sensorineural impairment and hearing levels within the normal range in the opposite ears were investigated by bilateral transtympanic electrocochleography (tiecog). only 19 patients (54%) satisfied the criteria for meniere's disease and 16 patients (46%) showed sensorineural impairment due to other etiologies. clinical studies have focused exclusively on the a m...

For nocturnal insects, predation by bats can turn a moonlight flight into a nightmare. Moths have a way of avoiding bats, however, in the form of ultrasonic hearing. Because they have 'tympanal' ears, they can hear the echolocation calls of incoming bats and take evasive action. Butterflies, which are mainly diurnal, have not been known to have ultrasonic hearing. But these images from an unusu...

Introduction: This study was designed to evaluate the usefulness of mastoid cavity obliteration with combined bone pâté and Palva flap in the prevention of problematic mastoid cavities after canal wall down mastoidectomy.   Materials and Methods: In a prospective longitudinal study with a mean follow-up of 28 months conducted between 2008–2012, a series of 56 ears in 48 patients with chronic ot...