Introduction

Tinnitus or “ringing in the ears” is a conscious perception of an auditory sensation in the absence of a corresponding external stimulus (Baguley et al., 2013; Hoekstra, 2013). The term tinnitus is derived from the Latin word “tinnire,” meaning “to ring.” For those affected, this has a considerable influence on the activity and participation level. In 0,5 % of this group life quality is extremely restricted by symptoms such as concentration and sleeping disturbances, reactive depression and fear (Cho et al., 2013; Malakouti et al., 2011).