Artifact Banish Control in Electrocerebral Inactivity Recording.

Sources of artifact in infrared recording of eye movement.

A detailed analysis of recording artifacts present in normal horizontal saccadic eye movements was performed using infrared reflective oculography. The effects of diode displacement were assessed. Optimal recordings were obtained with infrared sensors displaced 1 mm scleral to the midlimbal position. Displacement of the infrared sensor toward the sclera resulted in an artifactual decrease in ap...

Artifact reduction for EEG/fMRI recording part 1: nonlinear reduction of ballistocardiogram artifact

Objective: We present a new method to effectively remove ballistocardiogram artifacts (BAs) of electroencephalography (EEG), recorded inside a 1.5 T static magnetic field scanner, and conserve the time and frequency features of EEG activity. Methods: The BAs are approximated as deterministically chaotic dynamics. A wavelet-based nonlinear noise reduction (WNNR) method consisting of wavelet tran...

Co-recording of EEG and fMRI data: EEG artifact removal

The electroencephalogram (EEG) is a standard technique to record and study the brain activity with a high temporal resolution (ms). BOLD fMRI (Blood Oxygenation Level Dependent functional Magnetic Resonance Imaging) is a non-invasive imaging method that allows the localization of activated brain regions with a high spatial resolution (mm). The co-recording of these two complementary modalities ...

emittance control in high power linacs

چکیده این پایان نامه به بررسی اثر سیم پیچ مغناطیسی و کاوه یِ خوشه گر با بسامد رادیویی بر هاله و بیرونگراییِ باریکه هایِ پیوسته و خوشه ایِ ذرات باردار در شتابدهنده های خطیِ یونی، پروتونی با جریان بالا می پردازد و راه حل هایی برای بهینه نگهداشتن این کمیتها ارایه می دهد. بیرونگرایی یکی از کمیتهای اساسی باریکه هایِ ذرات باردار در شتابدهنده ها است که تاثیر قابل توجهی بر قیمت، هزینه و کاراییِ هر شتابدهند...

Electrocerebral findings in closed head injuries in childhood.