tinnitus; THI; DASS-21; Penn State Worry Questionnaire; self-regulation; neuromodulation; brain; electrical activity; psychophysical symptoms; Non-Linear Dynamical Neurofeedback; self-assessment questionnaires

tinnitus; THI; DASS-21; Penn State Worry Questionnaire; self-regulation; neuromodulation; brain; electrical activity; psychophysical symptoms; Non-Linear Dynamical Neurofeedback; self-assessment questionnaires