OBJECTIVE To evaluate the functional integrity of the facial nerve and blink reflex (BR) pathways in asymptomatic patients who underwent cochlear implantation (CI). STUDY DESIGN Case series with planned data collection. SETTING Tertiary referral center. SUBJECTS AND METHODS Twenty-four deafened patients with unilateral CI who had no complications were enrolled. Bilateral compound muscle a...

The trigeminal reflex blink is an ideal system to investigate whether stimulus paradigms that produce long-term potentiation (LTP) in vitro modify motor learning in humans. Presentation of 12 trains of low-intensity, high-frequency stimuli (HFS) to the supraorbital branch of the trigeminal nerve (SO) modified subsequent reflex blinks of human subjects. When HFS occurred concurrently with reflex...

Unilateral reduction in eyelid motility produced two modes of blink adaptation in humans. The first adaptive modification affected both eyelids. Stimulation of the supraorbital branch of the trigeminal nerve (SO) ipsilateral to the upper eyelid with reduced motility evoked bilateral, hyperexcitable reflex blinks, whereas contralateral SO stimulation elicited normally excitable blinks bilaterall...

A chalazion is a localized area of granulomatous inflammation associated with lipid deposits and swelling of the eyelid. It occurs due to the obstruction of sebaceous glands, meibomian or Zeis, of which the former is more common. The meibomian gland may be obstructed due to varying etiologies including infection, inflammation, or neoplastic lesions. Chalazia may have a slow, insidious onset wit...

The somatosensory-evoked blink response (SBR) is a newly identified blink reflex elicited by electrical stimulation of peripheral nerves. The present study was performed to investigate the physiological mechanism underlying the SBR elicited by median nerve stimulation in normal subjects. The peripheral afferents responsible for the SBR included low-threshold cutaneous fibres. In the SBR-positiv...

OBJECTIVE Electrophysiological recording of the electrically elicited blink reflex is the most reliable method of investigating habituation of the startle reflex. The purpose of this study was to compare the habituation and the late R3-component of the blink reflex between control subjects (N=19) and first-episode patients with schizophrenia (N=17), psychotic depression (N=23), and severe non-p...

A chalazion is a localized area of granulomatous inflammation associated with lipid deposits and swelling of the eyelid. It occurs due to the obstruction of sebaceous glands, meibomian or Zeis, of which the former is more common. The meibomian gland may be obstructed due to varying etiologies including infection, inflammation, or neoplastic lesions. Chalazia may have a slow, insidious onset wit...

To characterize the organization and plasticity of the trigeminal reflex blink circuit, we interacted blink-evoking supraorbital (SO) and infraorbital (IO) nerve stimuli in alert rats. Stimulation of either trigeminal branch produced a short-lasting inhibition followed by a longer-lasting facilitation of blinks evoked by stimulating the other nerve. When IO stimulation evoked a smaller blink th...