Seasonal affective disorder in patients with chronic tinnitus

Prediction of Tinnitus Perception Based on Daily Life MHealth Data Using Country Origin and Season

Tinnitus is an auditory phantom perception without external sound stimuli. This chronic perception can severely affect quality of life. Because tinnitus symptoms are highly heterogeneous, multimodal data analyses are increasingly used to gain new insights. MHealth data sources, with their particular focus on country- and season-specific differences, can provide a promising avenue for new insights. Therefore, we examined data from the TrackYourTinnitus (TYT) mHealth platform to create symptom profiles of TYT users. We used gradient boosting engines to classify momentary tinnitus and regress tinnitus loudness, using country of origin and season as features. At the daily assessment level, tinnitus loudness can be regressed with a mean absolute error rate of 7.9% points. In turn, momentary tinnitus can be classified with an F1 score of 93.79%. Both results indicate differences in the tinnitus of TYT users with respect to season and country of origin. The significance of the features was evaluated using statistical and explainable machine learning methods. It was further shown that tinnitus varies with temperature in certain countries. The results presented show that season and country of origin appear to be valuable features when combined with longitudinal mHealth data at the level of daily assessment.

Smartphone Apps in the Context of Tinnitus: Systematic Review

Smartphones containing sophisticated high-end hardware and offering high computational capabilities at extremely manageable costs have become mainstream and an integral part of users' lives. Widespread adoption of smartphone devices has encouraged the development of many smartphone applications, resulting in a well-established ecosystem, which is easily discoverable and accessible via respective marketplaces of differing mobile platforms. These smartphone applications are no longer exclusively limited to entertainment purposes but are increasingly established in the scientific and medical field. In the context of tinnitus, the ringing in the ear, these smartphone apps range from relief, management, self-help, all the way to interfacing external sensors to better understand the phenomenon. In this paper, we aim to bring forth the smartphone applications in and around tinnitus. Based on the PRISMA guidelines, we systematically analyze and investigate the current state of smartphone apps, that are directly applied in the context of tinnitus. In particular, we explore Google Scholar, CiteSeerX, Microsoft Academics, Semantic Scholar for the identification of scientific contributions. Additionally, we search and explore Google's Play and Apple's App Stores to identify relevant smartphone apps and their respective properties. This review work gives (1) an up-to-date overview of existing apps, and (2) lists and discusses scientific literature pertaining to the smartphone apps used within the context of tinnitus.

Findings and Ethical Considerations From a Thematic Analysis of Threads Within Tinnitus Online Support Groups

PURPOSE

Tinnitus is the perception of noise without a corresponding external stimulus. Current management typically aims to moderate associated psychosocial stressors and allow sufferers to retain an adequate quality of life. With the increasing recognition of the Internet as a repository for health advice, information, and support, the online support group has become a popular coping strategy for those living with chronic conditions such as tinnitus. Patients find that communicating with each other, providing encouragement, and sharing information in the absence of physical and temporal boundaries are invaluable ways of managing their condition. The purpose of this study was to explore the potential positive and negative consequences of participating in online support groups for tinnitus.

METHOD

Discussion forum threads were collated from across 4 public online support group websites. All threads were initiated between February and April 2016. Texts from these threads were coded by 3 separate analysts using both inductive and deductive thematic analysis, until data saturation was reached.

RESULTS

Analysis of 75 threads (641 individual posts) found 9 independent themes pertaining to aspects of participation in tinnitus online support groups. The results revealed that using the forums allowed users to exchange knowledge and experiences, express complex emotions, profit from a network of support, and engage in everyday conversation away from the burden of their tinnitus. However, some experiences appeared to be compromised by negative messages, limited communication, and informational issues such as conflicting advice or information overload.

CONCLUSIONS

This study represents the 1st research into discussion forums in tinnitus online support groups. A nonintrusive (passive) analysis method was used, whereby messages comprising the dataset were retrieved without direct interaction with the discussion forum. Individuals and the community of tinnitus online support groups are deemed to be at low risk from potential harm in this study. Most tinnitus patients likely benefit from accessing online support groups, for example, they discover they are not alone, and they find new coping strategies. However, for those who are particularly vulnerable or prone to psychological stress, accessing these groups could be detrimental.

A Conditioned Behavioral Paradigm for Assessing Onset and Lasting Tinnitus in Rats

Numerous behavioral paradigms have been developed to assess tinnitus-like behavior in animals. Nevertheless, they are often limited by prolonged training requirements, as well as an inability to simultaneously assess onset and lasting tinnitus behavior, tinnitus pitch or duration, or tinnitus presence without grouping data from multiple animals or testing sessions. To enhance behavioral testing of tinnitus, we developed a conditioned licking suppression paradigm to determine the pitch(s) of both onset and lasting tinnitus-like behavior within individual animals. Rats learned to lick water during broadband or narrowband noises, and to suppress licking to avoid footshocks during silence. After noise exposure, rats significantly increased licking during silent trials, suggesting onset tinnitus-like behavior. Lasting tinnitus-behavior, however, was exhibited in about half of noise-exposed rats through 7 weeks post-exposure tested. Licking activity during narrowband sound trials remained unchanged following noise exposure, while ABR hearing thresholds fully recovered and were comparable between tinnitus⁽⁺⁾ and tinnitus^(-) rats. To assess another tinnitus inducer, rats were injected with sodium salicylate. They demonstrated high pitch tinnitus-like behavior, but later recovered by 5 days post-injection. Further control studies showed that 1): sham noise-exposed rats tested with footshock did not exhibit tinnitus-like behavior, and 2): noise-exposed or sham rats tested without footshocks showed no fundamental changes in behavior compared to those tested with shocks. Together, these results demonstrate that this paradigm can efficiently test the development of noise- and salicylate-induced tinnitus behavior. The ability to assess tinnitus individually, over time, and without averaging data enables us to realistically address tinnitus in a clinically relevant way. Thus, we believe that this optimized behavioral paradigm will facilitate investigations into the mechanisms of tinnitus and development of effective treatments.