A physiological vascular correlate of hand preference: Possible implications with respect to hemispheric cerebral dominance

Carmon, Amiram; Gombos, George M.

doi:10.1016/0028-3932(70)90030-8

Cited by 30 publications

(6 citation statements)

References 11 publications

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“…In the case of SI right instead of left carotid artery is directly connected to the aortic arch and therefore more immediate blood flow is provided to the right cerebral hemisphere. An earlier study suggested this asymmetry in brain vascularization as possible initiator for hemispheric dominance (Carmon & Gombos, 1970). Our observations rule out the idea of altered blood flow influencing hemispheric dominance on a critical level.…”

Section: Discussionmentioning

confidence: 94%

Mens inversus in corpore inverso? Language lateralization in a boy with situs inversus totalis

et al. 2017

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Situs inversus totalis is a rare condition where the visceral organs are organized as a mirror image of default organ position. In this study we picture the co-development between brain and visceral organs in a case of situs inversus totalis from a fetal stage to adolescence and compare our findings to an age-, gender-, and education-matched control with normal position of thoracic and abdominal organs. We show that in this case of situs inversus, functional and structural brain lateralization do not coincide with visceral organ situs. Furthermore, cognitive development in situs inversus is normal. To our knowledge, this is the first report of antenatal cerebral origins of structural and functional brain asymmetry in a case of situs inversus totalis.

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Section: Discussionmentioning

confidence: 94%

Mens inversus in corpore inverso? Language lateralization in a boy with situs inversus totalis

et al. 2017

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“…There is evidence that the left hemisphere consumes more energy than the right one. There is anatomical evidence that the blood supply to the left hemisphere is larger than to the right one (Carmon and Gombos, 1970; Harris, 1985). It has been found by the positronic emission tomography (PET) technique that the left hemisphere consumes at rest more glucose than the right one (Rumsey et al , 1985).…”

Section: The Role Of Large Cellsmentioning

confidence: 99%

Temporal and simultaneous processing in the brain: a possible cellular basis of cognition

Fidelman

2002

Kybernetes

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It is suggested that the left hemispheric neurons and the magnocellular visual system are specialized in tasks requiring a relatively small number of large neurons having a fast reaction time due to a high firing rate or many dendritic synapses of the same neuron which are activated simultaneously. On the other hand the right hemispheric neurons and the neurons of the parvocellular visual system are specialized in tasks requiring a relatively larger number of short term memory (STM) Hebbian engrams (neural networks). This larger number of engrams is achieved by a combination of two strategies. The first is evolving a larger number of neurons, which may be smaller and have a lower firing rate. The second is evolving longer and more branching axons and thus producing more engrams, including engrams comprising neurons located at cortical areas distant from each other. This model explains why verbal functions of the brain are related to the left hemisphere, and the division of semantic tasks between the left hemisphere and the right one. This explanation is extended to other cognitive functions like visual search, ontological cognition, the detection of temporal order, and the dual cognitive interpretation of the perceived physical phenomena.

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“…Concentrations of noradrenaline are asymmetrical in the right dorso‐medial posterior thalamus, suggesting right hemispheric specialisation for an arousal reaction [16]. Greater blood volume and blood flow in the right hemisphere and negative correlations between blood flow in grey matter and EEG α power have also been considered as determinants of hemispheric specialisation [17–20]. Thus, electrophysiological and biological asymmetries predispose the right hemisphere to dominate the left in cerebral arousal and early information analysis.…”

Section: Discussionmentioning

confidence: 99%

Clinically relevant asymmetry of bispectral index during recovery from anaesthesia for ear-nose-throat surgery in adults and children

et al. 2011

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SummaryThis study investigates the incidence of clinically relevant asymmetry in bispectral index readings from different sides of the skull (using two monitors) during ear-nose-throat surgery in 42 adults and 46 children. A unilateral increase or decrease > 10% from baseline was defined as an 'asymmetry'. Asymmetry followed by movement after stimulation was defined as a 'clinically relevant asymmetry'. Asymmetry occurred in 39 out of 42 adults (93%) and in 20 out of 46 children (44%) during surgery and in 24 out of 42 adults (57%) and in 17 out of 46 children (37%) during recovery. Clinically relevant asymmetry was observed in 5 out of 42 adults (12%) and 6 out of 46 children (13%). The incidence of asymmetry was higher in adults during surgery (p = 0.0002). In conclusion, clinically relevant bispectral index asymmetry has been observed in > 10% of paediatric and adult anaesthesia and may have clinical implications.

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A physiological vascular correlate of hand preference: Possible implications with respect to hemispheric cerebral dominance

Cited by 30 publications

References 11 publications

Mens inversus in corpore inverso? Language lateralization in a boy with situs inversus totalis

Mens inversus in corpore inverso? Language lateralization in a boy with situs inversus totalis

Temporal and simultaneous processing in the brain: a possible cellular basis of cognition

Clinically relevant asymmetry of bispectral index during recovery from anaesthesia for ear-nose-throat surgery in adults and children

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