Further evidence that the callosum is involved in sustaining attention
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Cited by (33)
Cingulum-Callosal white-matter microstructure associated with emotional dysregulation in children: A diffusion tensor imaging study
2020, NeuroImage: ClinicalCitation Excerpt :The cingulum bundle primarily receives neuronal inputs from the cingulate cortex (Catani and Thiebaut de Schotten, 2012), the brain region implicated in the regulation of cognitive and emotional control processes that is altered in mood disorders (Bush et al., 2000; Giuliani et al., 2011; Versace et al., 2015; Wessa and Linke, 2009). The callosal fibers connect the two hemispheres and extend into sensorimotor regions (via the corona radiata) and are involved in sensorimotor coordination and maintaining balance of arousal and attentional vigilance (Rueckert and Levy, 1996; Rueckert et al., 1999; Sauerwein and Lassonde, 1994). The broad-range connections of cingulum and callosal pathways support the multi-faceted nature of the clinical phenotype of ED operationalized via empirically-derived CBCL-ED, including components of the Attention, Aggression, and Anxiety/Depression dimensions.
Microstructural abnormalities in anterior callosal fibers and their relationship with cognitive function in major depressive disorder and bipolar disorder: A tract-specific analysis study
2015, Journal of Affective DisordersCitation Excerpt :Zahr et al. (2009) showed a correlation between working memory performance and the FA in the genu of the CC in healthy subjects including more elderly subjects than that in our study, and Takeuchi et al. (2010) demonstrated a correlation between the amount of working memory training and increased FA in the anterior CC. In regards to attention, a recent review of functional MRI studies reported an association between performance of symbol coding and increased brain activity in the frontal and parietal regions (Forn et al., 2009), and Rueckert and Levy (1996) suggested an important involvement of the anterior CC in sustain attention because it contains fibers connecting the bilateral frontal cortices. Together with the results of these previous studies, our results of a significant correlation of FA reductions in the anterior callosal fibers with low performance of digit sequencing task and symbol coding in the MDD group suggest that the microstructural abnormalities in the anterior callosal fibers associate with impairment of working memory and attention in MDD.
Selective modulations of attentional asymmetries after sleep deprivation
2011, NeuropsychologiaCitation Excerpt :Difficulties to maintain attention over a prolonged period of time are also evidenced in cases of right parietal lesions (Malhotra, Coulthard, & Husain, 2009) and callosotomy (Dimond, 1976, 1979b; Ellenberg & Sperry, 1979), especially when the RH is required (Dimond, 1979a; Dimond & Beaumont, 1972, 1973). Furthermore, vigilance decrements are associated with callosal transfer efficiency levels (Rueckert, Baboorian, Stavropoulos, & Yasutake, 1999; Rueckert & Levy, 1996; Rueckert, Sorensen, & Levy, 1994). Overall, these data suggest that both the integrity of the RH alerting network and a good interhemispheric coordination are required to maintain optimal levels of vigilance.