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The corpus callosum and creativity revisited.
Front Hum Neurosci
September 2024
Travis Research Institute, Fuller School of Psychology & Marriage and Family Therapy, Pasadena, CA, United States.
In 1969 Joseph Bogen, a colleague of Roger Sperry and the neurosurgeon who performed commissurotomy on Sperry's "split-brain" study participants, wrote an article subtitled "The Corpus Callosum and Creativity." The article argued for the critical role of the corpus callosum and hemispheric specialization in creativity. Building on a four-stage model of creativity (learning, incubation, illumination, refinement) and Sperry's innovative studies, the Bogens posited that in the intact brain, creativity relies on two opposing functions of the corpus callosum: (a) interhemispheric inhibition to facilitate simultaneous and independent activity of uniquely-specialized processing centers during and and (b) interhemispheric facilitation to support the increased bi-hemispheric integration and coordination which produces This article revisits the Bogens' theory considering scientific discoveries over the past 50 years.
View Article and Find Full Text PDFEditorial: The legacy of Dr. Roger W. Sperry: current advances in brain lateralization and interhemispheric transfer.
Front Hum Neurosci
May 2024
Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy.
A Rare Case of Severe Mitral Stenosis Presenting As Cardiogenic Shock.
Cureus
April 2024
Cardiology, State University of New York Downstate Medical Center, Brooklyn, USA.
We report a case of severe mitral stenosis (MS) in a 58-year-old female from Guyana. Though rheumatic MS continues to be less prevalent in third-world countries, it poses a significant threat as far as morbidity and mortality are concerned. The modern definition of "Third World" is used to classify countries that are poor or developing.
View Article and Find Full Text PDFDichotic listening and interhemispheric integration after callosotomy: A systematic review.
Brain Res
August 2024
Section for Cognitive and Clinical Neuroscience, Department of Psychology, University of Oslo, Oslo, Norway. Electronic address:
The right-ear advantage (REA) for recalling dichotically presented auditory-verbal stimuli has been traditionally linked to the dominance of the left cerebral hemisphere for speech processing. Early studies on patients with callosotomy additionally found that the removal of the corpus callosum leads to a complete extinction of the left ear, and consequently the today widely used models to explain the REA assume a central role of callosal axons for recalling the left-ear stimulus in dichotic listening. However, later dichotic-listening studies on callosotomy patients challenge this interpretation, as many patients appear to be able to recall left-ear stimuli well above chance level, albeit with reduced accuracy.
View Article and Find Full Text PDFSplit-brain syndrome after subarachnoid haemorrhage.
BMJ Case Rep
January 2024
Institute of Diagnostic and Interventional Neuroradiology, University Hospital of Bern, Spital Netz Bern AG, Bern, Bern, Switzerland.
We present the case of a patient with extensive ischaemia of the corpus callosum (CC) including all its anatomical subdivisions, caused by a ruptured aneurysm of the anterior cerebral artery (ACA). This resulted in subarachnoid haemorrhage (SAH) and subsequently in cerebral vasospasm. The aneurysm was coiled, the vasospasm treated with repetitive intra-arterial spasmolysis and the patient then received intensive neurorehabilitative care.
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