Neuroanatomy
Dr Raymond Chang
Similar Posts
Assessing the Level of Consciousness
Dr Gilberto Leung and Dr Gary Lau Subtitles in English for this video can be displayed by clicking on (first button on the bottom right hand corner of the video). Our level of consciousness is governed by our cerebral cortex as well as the subcortical ascending reticular formation. Patients with normal consciousness have a high level…
Ocular Alignment and Extra-ocular Movement Examination
Subtitles in English for this video can be displayed by clicking on (first button on the bottom right hand corner of the video). Stereopsis (three dimensional vision) is important in our every day lives. This ability is dependent on aligning both foveae on the same object with slightly dissimilar perspectives to give a perception of depth….
Pupil Examination
Subtitles in English for this video can be displayed by clicking on (first button on the bottom right hand corner of the video). The size of the pupillary aperture at any point in time is dependent on a balance between sympathetic tone, parasympathetic tone, the light reflex and the near reflex. The light reflex is an…
Lower Limbs
Subtitles in English for this video can be displayed by clicking on (first button on the bottom right hand corner of the video). Inspection of the Lower Limbs After positioning the patient on the bed and ensuring adequate exposure, the lower limbs should be inspected as follow: The examiner should stand at the end of the bed and…
Osmotic Demyelination Syndrome
This is a set of cranial MRIs from a patient with osmotic demyelination syndrome, formerly called central pontine myelinolysis. Osmotic demyelination syndrome occurs when wide fluxes in serum sodium levels are induced by too rapid correction of hyponatremia. Oligodendrocytes, which forms the myelin sheaths, are particularly vulnerable to osmotic changes. If the osmotic stress is…
Upper Limbs
Subtitles in English for this video can be displayed by clicking on (first button on the bottom right hand corner of the video). Inspection of the Upper Limbs After adequate exposure, one should then lay the patient’s arms out comfortably. The examiner should stand at the end of the bed / facing the patient if the patient is…