Hearing

This work intends to find hearing loss or audiometric shifts in a group of elementary students and intensity of noise to which these students are exposed.

The chemical element zinc has been in the last decades strongly studied. It is well known that it is present in some different structures of the Central Nervous System, acting as a co-factor of excitatory glutamatergic synapsis. Its function is not yet fully understood, but it seems to modulate the sensibility of glutamatergic post-sinaptic receptors […]

The aim of this study was to elaborate an algorithm of the detection of brainstem lesion according BAEP changes. The following questions were raised for this purpose: 1) which interpretation strategy of BAEP changes selects the most patients with brainstem lesions? 2) which BAEP abnormalities differentiate between mass lesions of posterior fossa and demyelinating encephalomyelitis? […]

About 15% of temporal bone fractures are produced by blows to the occiput. The fracture line begins in the posterior fossa, at or near the foramen magnum, crosses the petrous ridge through the internal auditory canal and/or the otic capsule. Therefore it is thus called a transverse fracture. In transverse fractures of temporal bone, due […]

Although tinnitus is defined as an internal auditory sensation, external auditory stimuli can mask tinnitus under some circumstances. High-frequency vibration delivered as bone conduction stimulation is effective in masking high-pitched tinnitus. In this preliminary report, somatosensory stimulation in the form of low-frequency muscle vibration can also mask high-frequency tinnitus. Somatosensory stimulation provides fast, immediate relief, […]

The purpose of this work was to evaluate if a stimulus reptition rate that is higher than 30 clicks/sec increases the sensitivity of the absolute latencies of waves I, III and V and interpeak intervals I-III, III-V and I-V in the Auditory Brainstem Responses.(ABR) of Multiple Sclerosis (MS) patients.

Some authors have postulate that sistemic zinc can be employed in the threatment of tinnitus, because a sub-clinical hypozincemia is suposed to promote this auditory disturbance. However, in the majority of the cases of tinnitus, this hypozincemia was not confirmed. There is not enough randomized studies that could show the relationship between zinc and tinnitus. […]

Depression is a mental state of depressed mood characterised by feelings of sadness, despair, and discouragement. Depression ranges from normal feelings of “the blues” through dysthymia to major depression. It in many ways resembles the grief and mourning that follow bereavement. There are often feelings of low self-esteem, guilt, and somatic symptoms such as eating […]

The cause of objective tinnitus provoked by palatal and middle-ear myoclonus may be identified by magnetic resonance imaging of the central nervous system in the Guilliain-Mollaret triangle or it may be idiopathic. The idiopathic cases are rare. From the literature, one can perceive the following unanswered questions: (1) Are palatal and middle-ear myoclonus different entities […]

The auditory system has been the subject on studies of its capability to develop plastic responses to different kinds of lesions. Regeneration has been observed in the peripheral portions of the system, with neogenesis of hair cells in avians, sometimes followed by functional rehabilitation, with electrophysiological confirmation. It has been also noticed the ocurrence of […]