Noninvasive measurement of eye retraction during blinking
نویسندگان
چکیده
منابع مشابه
EOG measurement during EPI data aquisition for the event related fMRI of the voluntary eye blinking
The electrooculogram (EOG) of voluntary eye blinking is a distinguishable one among other eye blinking types such as spontaneous or reflexive blinking. In our study, we aimed to measure/detect the EOG of voluntary blinking during Echo Planar Imaging in the MR scanner. After the pulse artifact removal in the EOG signal, the waveform of EOG can clearly show voluntary eye blinking and this was equ...
متن کاملInvoluntary movements of the eye during fixation and blinking.
SEVERAL authors have investigated recently the small movements of the eyeball which occur during fixation, by recording the movement of a beam of light reflected from the cornea itself (Lord and Wright, 1948), from a small drop of mercury on it (Barlow, 1952), or from a plane mirror on (Ratliff and Riggs, 1950; Ditchburn and Ginsborg, 1953) or attached to (Fender, 1955) a contact lens. These me...
متن کاملDry eye, blinking, and blepharospasm.
The primary purpose of the eyelids is to ensure corneal integrity. An important component of this protective function is maintaining the corneal tear film. Blink characteristics can determine tear film stability. Increasing blink amplitude thickens the lipid layer that overlies the aqueous layer of the tear film. This thickening reduces evaporation of the aqueous layer. Because each blink refor...
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Fluid pressure increase in the brain, contained in the skull, is a serious medical condition that can be life threatening. Intracranial pressure changes can be detected noninvasively using acoustic stimulation and analysis. The brain and eye are coupled resonant systems that will respond in a predictable fashion to brain pressure increases, given the constraints of the bioboundary (skull) condi...
متن کاملEEG Eye-Blinking Artefacts Power Spectrum Analysis
Artefacts are noises introduced to the electroencephalogram’s (EEG) signal by not central nervous system (CNS) sources of electric fields inside and outside subject’s body. The artefacts impede the analysis of the signal and should be handled properly. The most common and characteristic kind of artefacts is the electrooculographic (EOG) ones, especially subject’s eye-blinking artefacts. In this...
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ژورنال
عنوان ژورنال: Optics Letters
سال: 2010
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.35.001884