It has been suggested that there may be an imbalance of excitation and inhibitory processes
in the visual areas of the brain in people with migraine aura (MA). One idea is …

Orientation discrimination is a visual task dependent on inhibitory mechanisms in the visual
cortex. In this study, orientation discrimination thresholds for bar and grating patterns were …

Background: After viewing dynamic noise surrounding a homogeneous grey patch (artificial
scotoma), observers perceive a prolonged twinkling-noise after-image within the …

Background: Asymmetry of visual phenomena and headache is an important feature of
migraine with aura. Methods: This asymmetry was explored by assessment of visual …

Background The pathophysiology of migraine is incompletely understood, but evidence
points to hyper-responsivity of cortical neurons being a key feature. The basis of hyper …

Background The interictal deficit of habituation to repetitive visual stimuli in migraine patients
could be due to deficient intracortical inhibition and/or to low cortical pre-activation levels …

BACKGROUND: Although a number of studies reported different interictal findings between
migraine with aura (MA) and migraine without aura (MO), the pathophysiology of the visual …

Background The mechanisms underlying the interictal habituation deficit of cortical visual
evoked potentials (VEP) in migraine are not well understood. Abnormal long-term functional …

A robust, visual masking test that was developed to be feasible with functional magnetic
resonance imaging (fMRI) was used to examine the visual cortical inhibitory function in …

purpose. To determine whether orientation discrimination deficits in migraine, which have
been found to depend on the spatial frequency of the stimulus, are due to precortical …