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Peripheral Nerve Injuries: Injuries to the Peripheral nerves.
 Science Education: Essentials of Physical Examinations III

Cranial Nerves Exam I (I-VI)

JoVE Science Education

Source: Tracey A. Milligan, MD; Tamara B. Kaplan, MD; Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA

During each section of the neurological testing the examiner uses the powers of observation to assess the patient. In some cases cranial nerve dysfunction is readily apparent: a patient might mention a characteristic chief complaint (such as loss of smell or diplopia), or a visually evident physical sign of cranial nerve involvement, such as in facial nerve palsy. However, in many cases a patient's history doesn't directly suggest cranial nerve pathologies, as some of them (such as sixth nerve palsy) may have subtle manifestations and can only be uncovered by a careful neurological exam. Importantly, a variety of pathological conditions that are associated with alterations in mental status (such as some neurodegenerative disorders or brain lesions) can also cause cranial nerve dysfunction, therefore any abnormal findings during a mental status exam should prompt a careful and complete neurological exam. The cranial nerve examination is applied neuroanatomy. The cranial nerves are symmetrical, therefore while performing the examination each side should be compared to the other. A physician should approach the examination in a systematic fashion and go through the

 JoVE Neuroscience

Kinematics and Ground Reaction Force Determination: A Demonstration Quantifying Locomotor Abilities of Young Adult, Middle-aged, and Geriatric Rats

1CullenWebb Animal Neurology & Ophthalmology Center, Riverview, NB, 2Department of Clinical Neurosciences, Faculty of Medicine, University of Calgary, 3Department of Comparative Biology and Experimental Medicine, University of Calgary, 4Department of Neuroscience, University of Calgary


JoVE 2138

 JoVE Medicine

A Step by Step Protocol for Subretinal Surgery in Rabbits

1Department of Ophthalmology, University of Bonn, 2Department of Ophthalmology, National University of Singapore, 3Geuder AG, 4Department of Ophthalmology, University of Münster, 5Section on Epithelial and Retinal Physiology and Disease, National Eye Institute/National Institutes of Health, 6Surgical Retina Department, Singapore National Eye Centre


JoVE 53927

 JoVE Neuroscience

Derivation of Glial Restricted Precursors from E13 mice

1Hugo W. Moser Research Institute at Kennedy Krieger, Johns Hopkins University, 2Department of Neurology, Johns Hopkins School of Medicine, 3University of Maryland, 4Experimental Neurology, Biogen Idec, 5The Brain Science Institute, Johns Hopkins School of Medicine, 6Department of Pediatrics, Johns Hopkins School of Medicine


JoVE 3462

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 JoVE Neuroscience

In Vitro Recording of Mesenteric Afferent Nerve Activity in Mouse Jejunal and Colonic Segments

1Laboratory of Experimental Medicine and Pediatrics, Division of Gastroenterology, University of Antwerp, 2Visceral Pain Group, Discipline of Medicine, University of Adelaide, 3Department of Biomedical Sciences, University of Sheffield, 4Department of Pharmacy, Pharmacology and Postgraduate Medicine, University of Hertfordshire, 5Department of Gastroenterology and Hepatology, Antwerp University Hospital


JoVE 54576

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 JoVE Bioengineering

Using Microfluidics Chips for Live Imaging and Study of Injury Responses in Drosophila Larvae

1Department of Molecular, Cellular and Developmental Biology, University of Michigan, 2Department of Biomedical Engineering, University of Michigan, 3Life Sciences Institute, University of Michigan, 4Department of Cell and Developmental Biology, University of Michigan, 5Department of Mechanical Engineering, University of Michigan


JoVE 50998

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 Science Education: Essentials of Physical Examinations III

Sensory Exam

JoVE Science Education

Source: Tracey A. Milligan, MD; Tamara B. Kaplan, MD; Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA

A complete sensory examination consists of testing primary sensory modalities as well as cortical sensory function. Primary sensory modalities include pain, temperature, light touch, vibration and joint position sense. Whereas the sensation of the face is discussed in the video of the cranial nerve examination as are the special senses of smell, vision, taste, and hearing. Pain and temperature information from skin to thalamus is mediated by the spinothalamic tract. The spinothalamic fibers decussate (cross over) 1-2 spinal nerve segments above the point of entry and then travel up to the brainstem until they synapse on various nuclei in thalamus. From the thalamus, information is the relayed to the cortical areas such as postcentral gyrus, also known as the primary somatosensory cortex. Afferent fibers transmitting vibration and proprioception travel up to medulla in the ipsilateral posterior columns as fasciculus gracilis and fasciculus cuneatus, which carry information from the lower limbs and upper limbs, respectively. Subsequently the afferent projections cross over and ascend to thalamus and from there to the primary somatosensory cortex. The pattern of a sen

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 Science Education: Essentials of Physical Examinations III

Motor Exam I

JoVE Science Education

Source: Tracey A. Milligan, MD; Tamara B. Kaplan, MD; Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA

Abnormalities in the motor function are associated with a wide range of diseases, from movement disorders and myopathies to strokes. The motor assessment starts with observation of the patient. When the patient enters the examination area, the clinician observes their ability to walk unassisted and their speed and coordination while moving. Taking the patient's history provides an additional opportunity to observe for evidence of tremors or other abnormal movements, such as chorea or tardive dyskinesia. Such simple but important observations can yield valuable clues to the diagnosis and helps to focus the rest of the examination. The motor assessment continues in a systematic fashion, including inspection for muscle atrophy and abnormal movements, assessment of muscle tone, muscle strength testing, and finally, the examination of the muscle reflexes and coordination. The careful systematic testing of the motor system and the integration of all the findings provide insight to the level at which the motor pathway is affected, and also help the clinician to formulate the differential diagnosis and determine the course of the subsequent evaluation and treatment.

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 JoVE Neuroscience

Transplantation of Olfactory Ensheathing Cells to Evaluate Functional Recovery after Peripheral Nerve Injury

1UPRES EA3830, Institute for Research and Innovation in Biomedicine, University of Rouen, 2Neuroscience, Karolinska Institutet, 3Otorhinolaryngology, Head and Neck Surgery Department, Rouen University Hospital, 4Otorhinolaryngology, Head and Neck Surgery Department, Amiens University Hospital


JoVE 50590

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 JoVE In-Press

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

1Department of Intensive Care Medicine, University Hospital Aachen, 2Institute of Biochemistry and Molecular Biology, University Hospital Aachen, 3Department of Radiology, German Cancer Research Center, 4Department of Thoracic and Cardiovascular Surgery, University Hospital Aachen, 5Department of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, 6Deutsches Zentrum für Herz-/Kreislaufkrankheiten (DZHK), Munich Heart Alliance

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JoVE 55192

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