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Morphometry of depth of interhemispheric fissure on Indian cadaveric brain specimens.
Clin Ter
May 2023
Department of Diagnostic and Interventional Radiology, AIIMS, Jodhpur, India.
Background: During neurosurgeries like resection of interhemispheric lipoma or cyst, surgeon needs to remain within the limits of interhemispheric fissure (IHF). Despite a massive literature search, data regarding the morphometry of IHF is meagre. Therefore, the present study was done to calculate the depth of IHF.
View Article and Find Full Text PDFA single dose of hydrocortisone does not alter interhemispheric transfer of information or transcallosal integration.
Front Psychiatry
April 2023
Department of Biopsychology, Faculty of Psychology, Institute of Cognitive Neuroscience, Ruhr University Bochum, Bochum, Germany.
Stress has been suggested as a factor that may explain the link between altered functional lateralization and psychopathology. Modulation of the function of the corpus callosum via stress hormones may be crucial in this regard. Interestingly, there is evidence that interhemispheric integration and hemispheric asymmetries are modifiable by endocrinological influences.
View Article and Find Full Text PDFSensory and motor cortical excitability changes induced by rTMS and sensory stimulation in stroke: A randomized clinical trial.
Front Neurosci
January 2023
Applied Neuroscience Laboratory, Department of Physical Therapy, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
Background: The ability to produce coordinated movement is dependent on dynamic interactions through transcallosal fibers between the two cerebral hemispheres of the brain. Although typically unilateral, stroke induces changes in functional and effective connectivity across hemispheres, which are related to sensorimotor impairment and stroke recovery. Previous studies have focused almost exclusively on interhemispheric interactions in the primary motor cortex (M1).
View Article and Find Full Text PDFTranscallosal and Pericallosal Courses of the Anterior Cerebral Artery.
Medicina (Kaunas)
September 2022
Division of Neurosurgery, Department 6-Clinical Neurosciences, Faculty of Medicine, "Carol Davila" University of Medicine and Pharmacy, RO-020021 Bucharest, Romania.
(1) Background: The anterior cerebral artery (ACA) has a precommunicating A1 segment, followed by a postcommunicating A2 segment. Anatomically, after it sends off from the callosomarginal artery (CMA), it continues as the pericallosal artery (PCalA). A detailed pattern of the anatomical variations of the PCalA are needed for practical reasons.
View Article and Find Full Text PDFProbing the Brain-Body Connection Using Transcranial Magnetic Stimulation (TMS): Validating a Promising Tool to Provide Biomarkers of Neuroplasticity and Central Nervous System Function.
Brain Sci
March 2021
L.A. Miller Centre, Recovery and Performance Laboratory, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL A1A 1E5, Canada.
Transcranial magnetic stimulation (TMS) is a non-invasive method used to investigate neurophysiological integrity of the human neuromotor system. We describe in detail, the methodology of a single pulse TMS protocol that was performed in a large cohort of people ( = 110) with multiple sclerosis (MS). The aim was to establish and validate a core-set of TMS variables that predicted typical MS clinical outcomes: walking speed, hand dexterity, fatigue, and cognitive processing speed.
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