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Clinical Trial Summary

The aim of the study is to evaluate the cortical excitability in the severe brain injured patients. We hypothesize that:

1. There is a continuous decrease in intracortical inhibition from healthy subjects to awake patients with severe brain injury, and to patients with impaired consciousness.

2. Decreased intracortical inhibition correlate with the degree of impairment assessed with the clinical scores in patients with severe brain injury.


Clinical Trial Description

Design: Prospective controlled non-randomized study. Materials and methods: 30 patients with severe brain injury and 15 healthy volunteers will be included in this study.

The study design is illustrated below:

1. Clinical assessment (Rancho Los Amigos Scale, Functional Independence Measure, Early Functional Abilities).

2. Somatosensory Evoked Potentials.

3. Transcranial Magnetic Stimulation: single and paired stimulation protocols.

Statistical evaluation: All collected data will be tested with reference to normal distribution. If the data is not distributed normally, then we will use either a logarithmic transformation before we use parametric statistics, or we will use non-parametric statistics for further calculations.Further analysis of the data will be done with the help of variance analysis with an inter-individually factor as a group (awake patients vs patients with disorders of consciousness vs control persons) and intra-individually factors as 1) interstimulus intervals for transcranial magnetic stimulation and clinical scores (RLAS vs FIM vs EFA).

Significance level is set to 0.05 for all effect parameters. ;


Study Design

Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic


Related Conditions & MeSH terms


NCT number NCT00788723
Study type Interventional
Source University of Aarhus
Contact Natallia Lapitskaya, MD
Phone 004587623573
Email neunla@sc.aaa.dk
Status Recruiting
Phase N/A
Start date July 2008
Completion date May 2009

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