Assessing hemispheric specialization for processing arithmetic skills in adults: A functional transcranial doppler ultrasonography (fTCD) study

Connaughton, Veronica M.; Amiruddin, Azhani; Clunies-Ross, Karen L.; French, Noel; Fox, Allison M.

doi:10.1016/j.jneumeth.2017.03.010

Cited by 8 publications

(6 citation statements)

References 67 publications

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“…This task also contained four subtasks; 3) Trial Making Test B (TMT B) which activates executive functions. This cognitive task was presented on a piece of paper and it was made of numbers (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13) and letters (A-L) (Tombaugh 2004). The goal was to connect numbers and letters alternately in ascending order in a 45-s time limit (1-A-2-B-3-C-.…”

Section: Experimental Paradigmmentioning

confidence: 99%

“…Since studies using TCD have shown that cognitive activation have effect on BFV in a healthy population (Boban et al 2014a, Boban et al 2014b, Stroobant & Vingerhoets 2000, Vingerhoets & Stroobant 1999, Schuepbach et al 2012, Connaughton et al 2017, Frauenfleder et al 2004 researches explored effect of neurocognitive activation on a BFV in patents with schizophrenia (Schuepbach et al 2002, Feldmann et al 2006, Schuepbach et al 2016, Schuepbach et al 2017, Sabri et al 2003 and found significant effect of neurocognitive activation on BFV, but in different directions. Heterogeneity of results can partially be explained with heterogeneous sample, different illness phase, possible effect of chronic use of antipsychotic medication etc.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Significantly Lower Right Middle Cerebral Artery Blood Flow Velocity in the First Episode of Psychosis During Neurocognitive Testing

Kekin

Bošnjak²,

Bajić³

et al. 2018

Psychiat Danub

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Section: Experimental Paradigmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Significantly Lower Right Middle Cerebral Artery Blood Flow Velocity in the First Episode of Psychosis During Neurocognitive Testing

Kekin

Bošnjak²,

Bajić³

et al. 2018

Psychiat Danub

View full text Add to dashboard Cite

show abstract

“…It is currently applied in the examination of lateralization patterns in children [11][12][13] and adults [14][15][16][17]. Additionally, it is applied in examining other cognitive functions, i.e., arithmetic [18] or spatial skills [19,20]. Besides healthy subjects, it is used as a non-invasive diagnostic approach in clinical populations, i.e., children born deaf or with brain damage of different etiology [21,22] as well as patients with epilepsy [23] or Parkinson's Disease [24].…”

Section: Introductionmentioning

confidence: 99%

Reproducibility of hemispheric lateralization over several days using functional transcranial Doppler sonography (fTCD): a pilot single-case study of word fluency

Heimann¹,

Weiss²,

Müller³

2022

J. Integr. Neurosci.

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Functional transcranial Doppler sonography (fTCD) is a time-and cost-effective, non-invasive approach to determining real time hemispheric lateralization and is well-suited for repetitive study designs comprising multiple days. To date, no study has examined the reproducibility of the direction and degree (strength) of lateralization during word fluency (WF) over multiple, consecutive sessions within a single person, although there are many studies of lateralization during language processing. Moreover, there is conflicting evidence as to whether there is a relationship between the degree of laterality and the word fluency performance. In this study, one right-handed male (aged 24 years) completed a total of seven examination sessions in the time span of 10 days. Each session comprised multiple phonological and semantic WF tasks. The maximum difference of relative cerebral blood flow velocity (CBFV) changes between the left and right middle cerebral artery (MCA) during WF was defined as the Lateralization Index (LI). The word-fluency performance and the LIs were used in a linear regression model to detect relative changes in the direction and degree of lateralization during repetitive WF tasks. The reproducibility of the direction of language-related lateralization is very stable over multiple sessions within this single person and the processed LIs were left-lateralized in every session for both WF tasks. In addition, performance during phonological WF could significantly predict the variability in the degree of lateralization. This result could not be confirmed for the semantic WF task. The results of this pilot study support the usage of fTCD as a reliable method for examining lateralization patterns, especially in longitudinal study designs. They also provide evidence for the notion that performance in WF tasks can be related to the degree of lateralization, at least intra-individually.

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“…Likewise, numerical information from a visual scene is encoded and processed along the occipitoparietal (dorsal stream) pathway and finally projected to number-selective circuits of the bilateral intraparietal sulcus [13]. Such hemispheric activation or lateralization, identified by the triple code model (TCM), also originates not only from number processing but also from arithmetical skill processing which has been assessed recently in adults by functional transcranial doppler ultrasonography [14]. The TCM of number processing is a theoretical framework proposed to be organized through three circuits -a linguistically mediated verbal coding circuit associated with the left hemisphere, a visual number coding circuit for recognition of Arabic digits associated with the bilateral fusiform and lingual regions of the ventral stream of object recognition, and a bilateral number magnitude (cardinal value/numerosity) coding circuit [15].…”

Section: Introductionmentioning

confidence: 99%

Neural activation patterns and connectivity in visual attention during Number and Non-number processing: An ERP study using the Ishihara pseudoisochromatic plates

2018

J. Integr. Neurosci.

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Visual cognitive function is important in the construction of executive function in daily life. Perception of visual number form (e.g. Arabic digits) and numerosity (numeric magnitude) is of interest to cognitive neuroscientists. Neural correlates and the functional measurement of number representations are complex events when their semantic categories are assimilated together with concepts of shape and color. Color perception can be processed further to modulate visual cognition. The Ishihara pseudoisochromatic plates are one of the best and most common screening tools for basic red-green color vision testing. However, there has been little study of visual cognitive function assessment using such pseudoisochromatic plates. 25 healthy normal trichromat volunteers were recruited and studied using a 128-sensor net to record event-related electroencephalogram.Subjects were asked to respond by pressing numbered buttons when they saw the number and non-number plates of the Ishihara color vision test. Amplitudes and latencies of N100 and P300 event related potential components were analyzed from 19 electrode sites in the international 10-20 system. A brain topographic map, cortical activation patterns, and Granger causation (effective connectivity) were analyzed from 128 electrode sites. No significant differences between N100 event related potential components for either stimulus indicates early selective attention processing was similar for number and non-number plate stimuli, but non-number plate stimuli evoked significantly higher amplitudes, longer latencies of the P300 event related potential component with a slower reaction time compared to number plate stimuli imply the allocation of attentional load was more in non-number plate processing. A different pattern of the asymmetric scalp voltage map was noticed for P300 components with a higher intensity in the left hemisphere for number plate tasks and higher intensity in the right hemisphere for non-number plate tasks. Asymmetric cortical activation and connectivity patterns revealed that number recognition occurred in the occipital and left frontal areas where as the consequence was limited to the occipital area during the non-number plate processing. Finally, results demonstrated that the visual recognition of numbers dissociates from the recognition of non-numbers at the level of defined neural networks. Number recognition was not only a process of visual perception and attention, but was also related to a higher level of cognitive function, that of language.

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Assessing hemispheric specialization for processing arithmetic skills in adults: A functional transcranial doppler ultrasonography (fTCD) study

Cited by 8 publications

References 67 publications

Significantly Lower Right Middle Cerebral Artery Blood Flow Velocity in the First Episode of Psychosis During Neurocognitive Testing

Significantly Lower Right Middle Cerebral Artery Blood Flow Velocity in the First Episode of Psychosis During Neurocognitive Testing

Reproducibility of hemispheric lateralization over several days using functional transcranial Doppler sonography (fTCD): a pilot single-case study of word fluency

Neural activation patterns and connectivity in visual attention during Number and Non-number processing: An ERP study using the Ishihara pseudoisochromatic plates

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