Auditory Brainstem Response as a Diagnostic Tool in Schizophrenia and Bipolar Disorder

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01629355

Enrollment

Registered

2012-06-27

Start date

2012-07-31

Completion date

2015-08-31

Last updated

2015-09-01

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

Conditions

Attention Deficit Disorder With Hyperactivity, Bipolar Disorder, Schizophrenia

Keywords

Auditory Brainstem Response, ABR, SD-BERA

Brief summary

The purpose of this study is to study the predictive value of SensoDetect-BERA as a diagnostic tool in clinical practice for schizophrenia and bipolar disorder.

Detailed description

Background: Within the daily clinical work of all medical specialties, objective diagnostic tools are paramount. However, in the psychiatric field such measures are lacking. Since 1983 the method of psychoacoustics has been under development in hope to serve this purpose. A recent development of auditory brainstem response (ABR/SD-BERA), has been proposed as a potential diagnostic tool within psychiatry. The ABR is a diagnostic tool used primarily to diagnose sensorineural hearing loss. It detects evoked potentials, generated by neuronal activity in the auditory pathways in the brainstem, within the first 10 ms following acoustic stimulation. The potentials are recorded by surface electrodes placed on the forehead and on the mastoid processes. The wave pattern recorded consists of seven peaks, which are interpreted with respect to latencies and amplitudes. Previous studies have aimed to associate the peaks with specific anatomical structures. The method SD-BERA is a further development of the standard ABR. It uses a wider array of acoustic stimuli, including complex sounds, for instance masking noises. The measuring procedure will roughly take 25 minutes. Previous studies using these complex sounds to compare mentally healthy subjects with patients suffering from schizophrenia, ADHD and bipolar disorder have shown that the different psychiatric groups exhibit specific wave patterns. Aims The aim of the first study is to validate previous results and identify five (n=5) patients with diagnosed ADHD, schizophrenia and bipolar disorder, and to compare these patients (n=15) with healthy, age-matched controls. The aim of the second study is to present a blinded study where 12 patients with schizophrenia and 12 patients with bipolar disorder (total n=24) are compared to each other and to healthy controls (n=12) in order to evaluate the method as a diagnostic tool in clinical healthcare practice.

Interventions

None listed

Study design

Observational model

CASE_CONTROL

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to 70 Years

Healthy volunteers

Yes

Inclusion criteria

* Best-practise diagnosed schizophrenia, bipolar disorder or ADHD * Diagnosed since at least one year prior to enrollment.

Exclusion criteria

* Serious hearing loss * Severe ongoing alcohol abuse or drug abuse * Diagnosed psychiatric comorbidity * Brain injury following cranial trauma

Design outcomes

Primary

Measure	Time frame	Description
SD-BERA patterns identified by SensoDetect using specific software	Brainstem potential patterns following an array of acoustic stimuli during a 25 min. examination	The Auditory Brainstem Response examination (SD-BERA) will be conducted once for each patient following his/her inclusion in the study

Countries

Norway

Outcome results