Using electrolaryngography and electroglottography to assess the singing voice: a systematic review

Electrolaryngography (Lx) and electroglottography (EGG) are non-invasive methods used to assess human vocal fold vibration and investigate speech and singing. This paper provides a systematic review of evidence-based studies using Lx/EGG in the analysis of the singing voice, identifying and critically appraising the thematic content and the research methodologies of the relevant investigations. Lx/EGG represents a powerful tool for the analysis of the singing voice in medical settings, and in support of research and teaching. Current research in this area is paving the way towards a better comprehension of singing performance.