scholarly journals Unilateral localized amyloidosis of levator palpebrae superioris muscle causing blepharoptosis

2020 ◽  
Vol 8 (2) ◽  
pp. 67
Author(s):  
Saptagirish Rambhatla ◽  
Avena Patel ◽  
Manju Kumari
Keyword(s):  
Localized Amyloidosis ◽  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle

Structural Abnormalities in the Levator Palpebrae Superioris Muscle in Patients With Congenital Blepharoptosis

2007 ◽  
Vol 38 (4) ◽  
pp. 283-289 ◽  
Author(s):  
Aleksandra Iljin ◽  
Anna Zielinska ◽  
Michal Karasek ◽  
Andrzej Zielinski ◽  
Aleksandra Omulecka
Keyword(s):  
Structural Abnormalities ◽  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle

Muscle Spindles in the Levator Palpebrae Superioris Muscle of Human Adults

2020 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Yasuhiro Takahashi ◽  
Yusuke Ohmichi ◽  
Patricia Ann L. Lee ◽  
Munekazu Naito ◽  
Takashi Nakano ◽  
...  
Keyword(s):  
Muscle Spindles ◽  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle ◽  
Human Adults

Discharge patterns of levator palpebrae superioris motoneurons during vertical lid and eye movements in the monkey

1992 ◽  
Vol 68 (1) ◽  
pp. 233-243 ◽  
Author(s):  
A. F. Fuchs ◽  
W. Becker ◽  
L. Ling ◽  
T. P. Langer ◽  
C. R. Kaneko
Keyword(s):  
Eye Movements ◽  
Firing Rate ◽  
Smooth Pursuit ◽  
Central Nucleus ◽  
Common Source ◽  
Superior Rectus ◽  
Steady Rate ◽  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle ◽  
Discharge Patterns

1. We recorded single-unit activity in the caudal central nucleus (CCN) of the oculomotor complex in monkeys trained to make vertical saccadic, smooth-pursuit, and fixation eye movements. We confirmed that our recordings were from motoneurons innervating the upper lid, because small lesions placed at the sites of responsive units were recovered among neurons labeled by horseradish peroxidase (HRP) injections into the levator palpebrae superioris muscle. 2. For fixations above a threshold lid position, levator motoneurons discharged at a steady rate, which increased linearly with upward lid position. The average position sensitivity during fixation was 2.9 spikes/s per deg, and the average lid motoneuron was recruited into steady firing when the eye was looking 10 degrees down. 3. During upward saccades, levator motoneurons discharged a burst of spikes that began, on average, 7.3 ms before the lid movement if the saccade started from a straight-ahead position; the lead time decreased considerably as the initial eye and lid positions shifted downward. The firing rate usually reached its peak (130–280 spikes/s) at the very onset of the burst and declined gradually during the course of the saccade. The steady rate associated with the new fixation position was reached about halfway during the saccade. All units exhibited a pause in firing during the initial half of large downward saccades; during small saccades, the pause was inconspicuous or absent. 4. During vertical sinusoidal smooth pursuit, levator motoneurons exhibited a sinusoidal modulation in firing rate, which led eye position by an average of 23 degrees at 0.3 Hz. The average velocity sensitivity calculated from such data was 0.63 spikes/s per deg/s. 5. Although they exhibit a number of qualitative similarities, the discharge patterns of levator motoneurons and superior rectus motoneurons differ in several respects. First, during a blink, when the lid undergoes a large depression but the eye exhibits only a brief transient displacement, levator motoneurons cease firing completely, whereas superior rectus motoneurons continue to discharge. Second, for all types of coordinated lid and eye movements, levator motoneurons discharge at lower firing rates than do superior rectus motoneurons. Third, during saccades, levator motoneurons have less conspicuous and shorter-lasting bursts and pauses than do motoneurons involved in rotating the eye. 6. During upward gaze, the qualitative similarity of their burst-tonic discharge patterns suggests that levator and superior rectus motoneurons receive input signals that originate from a common source, but that the signals are processed differently to deal with the different loads facing these muscles.(ABSTRACT TRUNCATED AT 400 WORDS)

The Surgical Relations of the Levator Palpebrae Superioris Muscle

1988 ◽  
Vol 4 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Bradley N. Lemke ◽  
Orkan George Stasior ◽  
Paul N. Rosenberg
Keyword(s):  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle

Levator Palpebrae Superioris muscle advancement for Steinert Myotonic Dystrophy eyelid ptosis

2020 ◽  
Author(s):  
Francesco Amendola ◽  
Giuseppe Cottone ◽  
Dino Zilio ◽  
Francesco Borelli ◽  
Kevin J. Cross ◽  
...  
Keyword(s):  
Myotonic Dystrophy ◽  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle

Dynamic Magnetic Resonance Imaging of the Levator palpebrae superioris Muscle

1998 ◽  
Vol 30 (1) ◽  
pp. 54-58 ◽  
Author(s):  
Armin Ettl ◽  
Albert Daxer ◽  
Siegfried Priglinger ◽  
Josef Kramer ◽  
Leo Koornneef
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Dynamic Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
Dynamic Magnetic Resonance ◽  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle

A retrograde double fluorescent tracing study of the levator palpebrae superioris muscle in the cynomolgus monkey

1997 ◽  
Vol 113 (1) ◽  
pp. 174-179 ◽  
Author(s):  
Frans VanderWerf ◽  
Majid Aramideh ◽  
Bram W. Ongerboer de Visser ◽  
Bob Baljet ◽  
J. D. Speelman ◽  
...  
Keyword(s):  
Cynomolgus Monkey ◽  
Levator Palpebrae ◽  
Levator Palpebrae Superioris Muscle
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