Bevægelsesartefakter

Bevægelsesartefakter, also known as movement artifacts, are unwanted signals or distortions that appear in data collected from various types of sensors or imaging devices, particularly those used in medical and scientific research. These artifacts are typically caused by the physical movement of the subject or the equipment during data acquisition. Common sources of movement artifacts include:

1. Patient movement during medical imaging procedures, such as magnetic resonance imaging (MRI) or computed tomography (CT) scans.

2. Electromyographic (EMG) signal contamination due to muscle movement.

3. Electroencephalographic (EEG) signal distortion caused by head movement.

4. Accelerometer data corruption from the device's own movement.

Movement artifacts can significantly impact the quality and accuracy of the collected data, making it difficult to interpret and analyze. To mitigate these artifacts, various techniques can be employed, such as:

1. Using specialized equipment or sensors that minimize movement.

2. Implementing motion tracking systems to monitor and compensate for movement.

3. Applying signal processing algorithms to filter out or correct movement-related distortions.

4. Ensuring proper subject positioning and stabilization during data acquisition.

Understanding and addressing movement artifacts is crucial for obtaining reliable and valid data in various fields, including medicine, neuroscience, and engineering. By employing appropriate techniques, researchers can minimize the impact of movement artifacts and improve the overall quality of their data.