A comparison of P-300 study in subjective tinnitus with normal hearing patients and normal hearing adults

Status

Unknown

Phases

Phase 2

Study type

Interventional

Source

TCTR

Registry ID

TCTR20220430002

Enrollment

Registered

2022-04-30

Start date

2022-05-01

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

subjective tinnitus subjective tinnitus P-300 cognition normal hearing

Interventions

P300 is cognition test

Experimental Other

P300

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. This study has two difference group; tinnitus group is normal hearing with tinnitus that presence of subjective tinnitus for at least three months and normal group is normal hearing without tinnitus. 2. age from 18-40 years and 41-60 years in both groups. 3. type A tympanogram in both ears.

Exclusion criteria

Exclusion criteria: 1. The subject are taking any medication that act on cognitive performance or the central nervous system. 2. The subjects had cognitive impairment as assessed by mini-cog. 3. The subjects had psychiatric problem as assessed by M.I.N.I.

Design outcomes

Primary

Measure	Time frame
latency and amplitude of P300 at the beginning of study msec and microvolt	—

Secondary

Measure	Time frame
tinnitus handicap inventory at the beginning of study score	—

Countries

Thailand

Contacts

Public ContactNapasswan Yodthong

Khon Kaen University

Napasswan.y@kkumail.com0911918036

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026