Nonlinear vocal phenomena are a ubiquitous feature of human and non-human animal vocalizations. Although we understand how these complex acoustic intrusions are generated, it is not clear whether they function adaptively for the animals producing them. One explanation is that nonlinearities make calls more unpredictable, increasing behavioural responses and ultimately reducing the chances of ha...

We evaluated 2 3-component multiple-schedule sequences-a response interruption and redirection (RIRD) treatment sequence and a no-interaction control sequence-using a multielement design. With this design, we were able to evaluate the immediate and subsequent effects of RIRD on 2 participants' vocal stereotypy. For both participants, RIRD produced an immediate decrease in vocal stereotypy and d...

Vocal nodules and polyps are the most common benign laryngeal lesions. Recent studies have emphasized the importance of the clinicohistological correlation in laryngeal pathologies. The clinico-histological correlation of these lesions is not always easy, but an accurate diagnosis is of the utmost importance.

Voice hoarseness is mainly related to airflow turbulence in the vocal tract. It can be due to vocal fold paralysis, polyps, cordectomisation or other dysfunction, which alter regular speech production, and is commonly treated as a noise component in the speech signal. A denoising approach is proposed, based on low-order singular value decomposition (SVD) of matrices whose entries come from samp...

A 47-year-old obese woman with GERD and COPD presents for CO2-laser excision of bilateral vocal fold masses. She had a history of progressive hoarseness and difficulty in breathing. Nasopharyngeal laryngoscopy revealed large, mobile, bilateral vocal cord polyps that demonstrated dynamic occlusion of the glottis. We describe the airway and anesthetic management of this patient with a topicalized...

OBJECTIVE To quantify vibratory characteristics of various laryngeal disorders seen by high-speed digital imaging (HSDI). METHODS HSDI was performed on 78 patients with various laryngeal disorders (20 with polyp, 16 with carcinoma, 13 with leukoplakia, 6 with vocal fold nodule, and 33 with others) and 29 vocally healthy subjects. Obtained data were quantitatively evaluated by frame-by-frame a...

OBJECTIVES To evaluate the applicability and effectiveness of percutaneous corticosteroid injection in patients with vocal fold polyp and to describe its advantages and limitations in this group of patients. DESIGN Prospective case series. SETTING Tertiary care teaching hospital. PATIENTS Twenty-four patients with vocal fold polyp treated between March 1 and December 31, 2007. INTERVENT...

Conflict of interest: non-existent processes may collaborate to the appearance of polyp, such as gastroesophageal reflux, aspiration of aggressive chemical substances or intense respiratory activities10. The main vocal symptoms presented are hoarseness and breathiness, besides vocal fatigue7,11. The treatment normally adopted for this type of vocal fold lesion is surgical12 despite pre-surgical...