AI Article Synopsis
- The study observes that as carbon dioxide levels (hypercapnia) increase in chick embryos between 14 to 19 days of incubation, there is a noticeable decline in both motor activity and the spinal cord's burst activity.
- Experimental exposure to different CO2 levels showed that burst activity decreases within just 5 minutes, and the degree of this effect varies based on the embryo's age and the frequency of hypercapnic exposure.
- The findings indicate that short-term and long-term effects of increased CO2 on motor functions and neural activity are significantly different, highlighting the importance of metabolic factors in the embryo's development.
Article Abstract
Progressive hypercapnia in the normal chick embryo late in incubation (14-19 days) is temporally associated with a gradual decline in motor activity and the corresponding frequency of polyneuronal (burst) activity in the spinal cord. We have studied the possible correlation between the increasing hypercapnia and the declining frequency of burst activity seen during these later stages of incubation by systematic manipulation of CO2 levels. Burst frequency was seen to decrease as a result of a 5-min exposure to different carbon dioxide environments at all ages studied. The magnitude of this inhibition and the ability to recover from consecutive bouts of hypercapnia (pulses) is pulse and age dependent. These short-term (less than 5.0 min) changes differ qualitatively from the long-term (greater than 2.5 h) effects of subsequent hypercapnic episodes. This evidence suggests a role for metabolic factors in the normal developmental changes in motility and electrophysiological activity in the chicken embryo spinal cord.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000112569 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cognitive Deficits in Anti-LGI1 Encephalitis Are Linked to Immunotherapy-Resistant White Matter Network Changes.
Neurol Neuroimmunol Neuroinflamm
March 2025
Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt- Universität zu Berlin.
Background And Objectives: Cognitive deficits represent a major long-term complication of anti-leucine-rich, glioma-inactivated 1 encephalitis (LGI1-E). Although severely affecting patient outcomes, the structural brain changes underlying these deficits remain poorly understood. In this study, we hypothesized a link between white matter (WM) networks and cognitive outcomes in LGI1-E.
View Article and Find Full Text PDFUser-Centered Design of Neuroprosthetics: Advancements and Limitations.
CNS Neurol Disord Drug Targets
January 2025
Biosciences and Bioengineering PhD Program, American University of Sharjah, UAE.
Neurological conditions resulting from severe spinal cord injuries, brain injuries, and other traumatic incidents often lead to the loss of essential bodily functions, including sensory and motor capabilities. Traditional prosthetic devices, though standard, have limitations in delivering the required dexterity and functionality. The advent of neuroprosthetics marks a paradigm shift, aiming to bridge the gap between prosthetic devices and the human nervous system.
View Article and Find Full Text PDFCase report: Movement-related neuroplasticity in a patient after spinal cord injury in response to task-oriented bimanual training.
Front Hum Neurosci
January 2025
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China.
Background: Bimanual motor training is an effective neurological rehabilitation strategy. However, its use has rarely been investigated in patients with paralysis caused by spinal cord injury (SCI). Therefore, we conducted a case study to investigate the effects of robot-assisted task-oriented bimanual training (RBMT) on upper limb function, activities of daily living, and movement-related sensorimotor activity in a patient with SCI.
View Article and Find Full Text PDFA Rare Case of Bilateral Foot Drop Following Cervical Decompression in Tandem Spinal Stenosis.
Cureus
December 2024
Orthopaedic Surgery, Ng Teng Fong General Hospital, Singapore, SGP.
This case report describes a 70-year-old male presenting with limb weakness, urinary retention and tandem cervical and lumbar spinal stenosis with complicating white cord syndrome, a rare reperfusion injury post decompression surgery. Initially admitted following an unwitnessed fall, the patient's neurological examination indicated that progressive weakness of the limbs and sensory loss etiology is cervical and lumbar spondylosis with severe spinal canal stenosis, confirmed by imaging. Due to rapid deterioration, he underwent C5 corpectomy, cervical decompression and fusion.
View Article and Find Full Text PDFConsumer Products Nerve Injuries Among Patients Products Presenting to United States Emergency Departments Between 2012 and 2021: A Nationwide Cohort.
Open Access Emerg Med
January 2025
Department of Anesthesiology, Warren Alpert School of Medicine, Brown University, Providence, RI, 02903, USA.
Introduction: Nerve injuries and resultant pain are common causes of emergency department (ED) visits in the United States. Injuries often occur either due to activity (ie sports related injury) or due to consumer products such as stairs or bedframes. We investigated the incidence of consumer product-related nerve injuries (CPNIs) in patients who presented to the ED in the United States.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!