Related Experiment Video
Updated: Oct 11, 2025
10:39
3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
Published on: June 2, 2014
18.4K
Occipital bending in migraine with visual aura
Esra Özkan1, Yasemin Gürsoy-Özdemir1,2
1Koç University Research Center for Translational Medicine, Koç University Hospital, Istanbul, Turkey.
Headache
|November 29, 2021
Summary
Occipital bending (OB) is more common in migraine with visual aura patients. This brain asymmetry may play a role in the pathophysiology of visual aura in migraine.
Area of Science:
- Neuroscience
- Radiology
- Neurology
Background:
- Occipital bending (OB) is a unique brain asymmetry where one occipital pole crosses the midline.
- OB has been linked to psychiatric conditions, suggesting it's more than an anatomical variation.
- Brain structural differences exist between migraine with aura and without aura, but OB's role is unexplored.
Purpose of the Study:
- To investigate the frequency of occipital bending (OB) in patients experiencing migraine with visual aura.
- To compare OB prevalence between migraine with aura and migraine without aura patient groups.
Main Methods:
- Retrospective cohort study analyzing data from 2016-2021.
- Included 84 migraine patients with and without visual aura who underwent cranial MRI.
- Data sourced from Koç University Hospital's outpatient headache clinic database.
Main Results:
- The overall prevalence of OB in migraine patients was 33.3%.
- OB was significantly more frequent in patients with migraine with visual aura (57.1%) compared to those without aura (25.4%).
- The odds ratio for OB in migraine with visual aura was 3.9 (p=0.015).
Conclusions:
- Occipital bending (OB) occurs twice as frequently in patients with migraine with visual aura.
- The increased prevalence suggests potential pathophysiological implications of OB in migraine with visual aura.
Related Concept Videos
01:15Equilibrium and Balance
5.2K
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
5.2K
01:16Focusing of Light in the Eye
3.4K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
3.4K
01:25Glaucoma: Overview
957
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
957
01:12Visual Agnosia
441
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
441
01:28Angle Closure Glaucoma: Treatment
885
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
885
01:15Unsymmetric Bending - Angle of Neutral Axis
522
Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
522