Progress in neural network mechanism of tinnitus using functional magnetic resonance imaging / 临床耳鼻咽喉头颈外科杂志

Tinnitus refers to the perception of abnormal sound in the absence of external sound stimulation. It can have an impact on a person's mood, memory, attention, and mental state, although the mechanism of tinnitus is still unclear. In recent years, the research on the central neural mechanism of tinnitus has attracted the attention of scholars.Functional magnetic resonance imaging （fMRI）,as an effective imaging technology, has been actively employed in this field. This paper provides a systematic summary of studies on the central neural mechanism of tinnitus by fMRI in recent years,revealed the changes of functional connections among tinnitus-related neural networks,such as auditory network,limbic system,default mode network and salience network. The central neural mechanism of tinnitus involves multiple networks that interact with each other. By understanding this mechanism, we hope to develop more targeted prevention and treatment strategies to help patients alleviate long-term tinnitus.

The Role of Magnetic Resonance Imaging of the Temporomandibular Joint to Investigate Tinnitus in Adults with Temporomandibular Joint Disorder: A Comparative Study

Abstract Introduction The prevalence of tinnitus is higher in individuals with temporoman- dibular joint disorder (TMD) than in the general population. Magnetic resonance imaging (MRI) of the temporomandibular joint (TMJ) is the method of choice for investigation, and it has been hypothesized that specific MRI findings might be observed in TMD with comorbid tinnitus. Objective To comparatively describe MRI findings in patients with TMD with and without tinnitus, identifying the most common TMJ alterations and determining whether a correlation exists between severity of TMD and tinnitus. Methods A cross-sectional study of 53 adult patients with bilateral or unilateral TMD (30 with and 23 without tinnitus). The association between tinnitus and morphological aspects of TMD (changes in condylar morphology, articular eminence morphology, and disc morphology), disc displacement (with/without reduction), condylar translation, and intra-articular effusion was analyzed on MRI images. Results The mean patient age was 46.12 ± 16.1 years. Disc displacement was the most common finding in both groups (24 patients with tinnitus versus 15 without; p = 0.043). Only the frequency of disc displacement with reduction was significantly different between groups. Conclusion Additional imaging techniques should be explored to detect specific aspects of the relationship between tinnitus and TMD.

Tinnitus pulsátil: caso clínico y revisión de la literatura / Pulsatile tinnitus: clinical case and review

RESUMEN El tinnitus pulsátil es un síntoma otológico infrecuente pero requiere un estudio acabado. Una historia y examen físico detallados, son primordiales para orientar el estudio imagenológico posterior, con lo que se llega al diagnóstico en gran parte de los casos. El tratamiento debe ser dirigido a corregir la causa subyacente. En este trabajo, se presenta un caso clínico de tinnitus pulsátil, revisión del tema y orientación al enfoque diagnóstico.

ABSTRACT Pulsatile tinnitus is an infrequent otologic symptom but requires a thorough study. A detailed history and physical examination are essential to guide the subsequent imaging study, with which the diagnosis is reached in a large number of cases. The treatment should be aimed at correcting the underlying cause. In this study, a clinical case of pulsatile tinnitus, review of the subject and orientation to the diagnostic approach is presented.