Anand Balaji Rangarathnam

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• Ph.D.
• Professor (Associate) at Midwestern University

A clinical swallowing examination (CSE) is generally believed to be inadequate for making judgments regarding swallowing physiology compared to objective assessments. A large volume of studies has heavily focused on identifying aspiration using a CSE and research addressing physiologic information gathered from a CSE is sparse. The purpose of this...

There have been a number of studies on the effect of bolus volume, consistency, texture, temperature and taste on the oropharyngeal swallowing physiology. However, its influence on the respiratory function associated with swallow is not well understood. This study aimed at systematically analysing and documenting the prevailing research literature...

A wide body of literature has demonstrated that the neural representation of healthy swallowing is mostly bilateral, with one hemisphere dominant over the other. While several studies have demonstrated the presence of laterality for swallowing related functions among young adults, the data on older adults are still growing. The purpose of this pape...

Objective : The purpose of the study was to investigate the effects of flow phonation voice therapy on laryngeal physiology and vocal quality in persons with primary Muscle Tension Dysphonia (MTD1). Methods : Seventeen participants with a diagnosis of MTD1 completed the study. Participants were randomized to two groups. Group 1 (9 participants) re...

Purpose The purpose of this study was to investigate the utility of telepractice for delivering flow phonation exercises to persons with primary muscle tension dysphonia (MTD). Method Fourteen participants with a diagnosis of primary MTD participated, 7 on site and 7 at remote locations. Each participant received 12 treatment sessions across 6 wee...

Introduction. Goals of voice therapy and vocal pedagogy share similar principles and therefore, therapy approaches designed to improve the disordered voice may be equally effective when used to enhance healthy voice and vice versa. The purpose of this study was to investigate the effects of flow phonation voice exercises on vocal characteristics of...

Purpose The objective of this study was to examine specific patterns of Twitter usage using common reference to stuttering. Method The study used cross-sectional analysis of data generated from Twitter data. Twitter content, language, reach, users, accounts, temporal trends, and social networks were examined. Results We identified and analyzed ar...

In the Muslim community, accurate perception of classical Arabic phones is considered of importance in order to understand and recite the Quran, which is read, studied and recited in its original Arabic language. In this study, high variability phonetic training (HVPT) was used to train accurate perception of Arabic consonants that do not exist in...

Purpose: The purpose of this study was to survey and describe dysphagia practice patterns among speech-language pathologists (SLPs) in India, where no standardized practice pattern guidelines currently exist. Although the overarching goals of dysphagia rehabilitation are largely similar, population needs, clinical practice patterns, availability of...

Objective: The goals of this research are (1) to establish normative nasalance values for bilingual Mandarin-English speakers and compare values to those of previously reported monolingual Mandarin speakers, and (2) to examine whether sex, age, dialect, and language proficiency affect levels of nasalance among Mandarin-English speakers in both Eng...

This study evaluates F0 declination and reset in read speech produced by African American and White women speakers of American English as an active, linguistically-controlled process. The results demonstrate that African American women have less change in F0 over the duration of the breath group unit than White peers. There was no evidence of the u...

Prosodic variation between African American English and General American English has been attested to in numerous works, yet few studies have collected measures of F0 in African American English and fewer have examined F0 beyond the word level. Additionally, the analysis of prosodic variation in regional dialects of American English is not well stu...

Purpose The purpose of this investigation was to determine the effects of intensive stage rehearsal and performance on perceptual, acoustic, and aerodynamic measures of voice, and to determine the impact of knowledge and practice of vocal hygiene on measures of voice during intensive vocal performance. Methods Nineteen stage actors who were partic...

The act of swallowing is “multidimensional” and involves contributions from several neuroanatomical structures. A stroke affecting any of these areas is likely to cause some amount of physiologic impairment in deglutition. This paper explores current and emerging evidence for rehabilitative exercises for physiological impairments in deglutition due...

The purpose of this study was to use three-dimensional magnetic resonance imaging to correlate velopharyngeal closure patterns with velopharyngeal anatomic structural characteristics. Thirty-eight participants (18 females and 20 males) between 19 and 32 years of age participated in the study. Participants were evaluated using magnetic resonance ima...

The objective of this review is to gather available evidence regarding the role of the cerebellum in swallowing-related functions. We reviewed literature on cerebellar functions related to healthy swallowing, patterns of dysphagia in individuals with cerebellar lesions, and the role of the cerebellum in therapeutic intervention of neurogenic dyspha...

• Objective: To provide an evidence-based clinical update on the pathophysiology, assessment, and treatment of spasmodic dysphonia (SD). • Methods: We reviewed the extant literature on SD spanning predominantly the past 2 decades. References were extracted from Medline and PubMed using search terms of spasmodic dysphonia, pathophysiology, assessmen...

Context: While clinical successes and descriptions have been reported in a few texts, no data exist to define the utility of flow phonation to improve voice quality in patients with laryngeal hyperfunction. Aims: To provide pilot data regarding the utility of three exercises (gargling, cup bubble blowing, and stretch-and-flow) to improve phonatory...