Brain and Voice Signatures in Teachers

Exclusion Criteria

• •Lefthandedness
• •Smoking (past 5 years)
• •Known changes of the vocal folds (e.g., vocal fold nodules), vocal fold paralysis, surgeries on the larynx or thryoid or current organic or neurological changes of the vocal folds or vocal function per videoendoscopy and -stroboscopy of the larynx
• •History of voice therapy
• •Hoarseness
• •Respiratory illness, allergies (respiratory, silver), reflux or asthma at time of participation
• •Hearing disorder or hearing aids
• •Psychological, neurological or endocrinological disorders
• •Psychotropic or steorid medications
• •Body mass index \> 30
• •Indications against MRI such as metail parts in or on the body (e.g., permanent dental prostheses or braces, screws, prostheses, piercings or large tattoos
• •Nearsightedness \> -5 diopters, if only glasses are worn
• •Claustrophobia
• •Pregnancy