Analysis of voice disorder in spasmodic dysphonia using simultaneous monitoring of vocal fold vibration, laryngeal motion and acoustic signals

Analysis of voice disorder in spasmodic dysphonia using simultaneous monitoring of vocal fold vibration, laryngeal motion and acoustic signals - Analysis of voice disorder in spasmodic dysphonia

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000025221

Enrollment

Registered

2017-01-01

Start date

2017-01-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

spasmodic dysphonia

Interventions

voice recording of test sentence reading Output of photo- and electroglottogram

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Expression of full voluntary participation in the research after the full disclosure and understanding of the project plan.

Exclusion criteria

Exclusion criteria: 1. Organic abnormality or paralysis of the larynx. 2. Judgement of unsuitability for inclusion by the chief resercher

Design outcomes

Primary

Measure	Time frame
Acoustic features of voice: pitch perturbation, disturbance of periodicity and voice break.	—

Secondary

Measure	Time frame
Output of electroglottogram and photoglottogram	—

Countries

Japan

Contacts

Public ContactNoriko Nishizawa

Health Sciences University of Hokkaido School of Rehabilitation Sciences

nisizawa@hoku-iryo-u.ac.jp0133-23-1211

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026