Results 11 to 20 of about 4,288 (259)

The evolution of the syrinx: An acoustic theory.

open access: yesPLoS Biology, 2019
The unique avian vocal organ, the syrinx, is located at the caudal end of the trachea. Although a larynx is also present at the opposite end, birds phonate only with the syrinx. Why only birds evolved a novel sound source at this location remains unknown,
Tobias Riede   +3 more
doaj   +4 more sources

Pan, Syrinx and syringomyelia [PDF]

open access: yesArquivos de Neuro-Psiquiatria, 2017
ABSTRACT Many myths and legends have had a deep influence on modern language, and on modern medical vernacular. The terms “syrinx” and “panic”are two of the most characteristic examples and their use in neurology and other specialties is well known. This article reviews the history of these words in Greek mythology and their use in modern medicine.
Palacios-Sánchez, Leonardo   +2 more
openaire   +6 more sources

Type I Chiari Malformation Without Concomitant Bony Instability: Assessment of Different Surgical Procedures and Outcomes in 73 Patients [PDF]

open access: yesNeurospine, 2021
Objective Posterior fossa decompression is the treatment of choice in type 1 Chiari malformation (CM-1) without bony instability. Although surgical fixation has been recommended by a few authors recently, comparative studies to evaluate these treatment ...
Kamlesh Rangari   +9 more
doaj   +1 more source

Pulsatile cerebrospinal fluid dynamics in Chiari I malformation syringomyelia: Predictive value in posterior fossa decompression and insights into the syringogenesis

open access: yesJournal of Craniovertebral Junction and Spine, 2021
Background: Pathophysiological mechanisms underlying the syringomyelia associated with Chiari I malformation (CM-1) are still not completely understood, and reliable predictors of the outcome of posterior fossa decompression (PFD) are lacking accordingly.
Sabino Luzzi   +7 more
doaj   +1 more source

Syringomyelia Associated with Spinal Dural Arteriovenous Fistula: Clinical and Radiological Improvement after Embolization [PDF]

open access: yesNeurointervention, 2020
Spinal dural arteriovenous fistulae (AVF) are rare and can result in spinal cord dysfunction. We present one such case wherein the patient presented with a venous congestive myelopathy.
Rakesh Singh   +3 more
doaj   +1 more source

Spinal hemangioblastoma causing a holocord syrinx: A report of two cases and review of literature

open access: yesIndian Spine Journal, 2023
Intramedullary spinal hemangioblastomas are often associated with syringomyelia. However, holocord syrinx associated with such lesions is a rare entity. We present two cases of dorsal spinal hemangioblastoma associated with holocord syrinx.
Tungish Bansal   +2 more
doaj   +1 more source

The hummingbird syrinx morphome: a detailed three-dimensional description of the black jacobin’s vocal organ

open access: yesBMC Zoology, 2020
Background The ability to imitate sounds depends on a process called vocal production learning, a rare evolutionary trait. In addition to the few mammalian groups that possess this ability, vocal production learning has evolved independently in three ...
Amanda Monte   +4 more
doaj   +1 more source

Suppression of TGFβR-Smad3 pathway alleviates the syrinx induced by syringomyelia

open access: yesCell & Bioscience, 2023
Background Syringomyelia is a cerebrospinal fluid (CSF) disorder resulted in separation of pain and temperature, dilation of central canal and formation of syrinx in central canal. It is unclear about mechanisms of the dilation and syrinx formation.
Sumei Liu   +5 more
doaj   +1 more source

Missed Diagnosis of Syrinx [PDF]

open access: yesAsian Spine Journal, 2012
Prospective, randomized, controlled human study.We checked the proportion of missed syrinx diagnoses among the examinees of the Korean military conscription.A syrinx is a fluid-filled cavity within the spinal cord or brain stem and causes various neurological symptoms.
Oh, Chang Hyun   +5 more
openaire   +2 more sources

Active Conservative Management of Primary Spinal Syringomyelia: A Scoping Review and Perspectives for an Activity-based Clinical Approach

open access: yesJournal of Rehabilitation Medicine, 2022
Objective: This scoping review aimed to identify and synthesize existing research on active conservative management of primary spinal syringomyelia and associated symptoms and to discuss perspectives for clinical application using an activity-based ...
Line Olsson   +2 more
doaj   +1 more source

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