Atypical right hemispheric functioning in the euthymic state of bipolar affective disorder

Abstract

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Complexity analysis of spontaneous brain activity in mood disorders: A magnetoencephalography study of bipolar disorder and major depression

“…Previous studies reported a certain right-hemisphere lateralization problem in BD. Such notion was supported by EEG evidences of "additional right hemisphere activity" in Clementz et al's [4] classical study, by the MRI evidences of specific right-hemisphere white matter abnormalities [54] and functional disturbances [55], or by very recent studies of lateralization of function in euthymic BD [56]. Overall, these investigations reinforce to some extent the early assertion by Flor-Henry [57] of a right-hemisphere dysfunction in BD although the actual situation is probably better represented by a more complicated scenario.…”

Cognitive control over visual food cue saliency is greater in reduced-overweight/obese but not in weight relapsed women: An EEG study

“…First, differences in cortical arousal were found in RED versus LW-CTL women only, and were confined to the right hemisphere during food task performance. Notably, the activation of the autonomic arousal, attentional orienting and motivational systems have previously been shown to associate with right as opposed to left brain functioning (Najt & Hausmann, 2014;Nielsen, Zielinski, Ferguson, Lainhart, & Anderson, 2013;Russell, Malhotra, Deidda, & Husain, 2012). Extending these results is evidence that patients with brain abnormalities involving the frontal cortex, especially over the right hemisphere, show a marked decline in cognitive control over food craving (Arias, Crespo-iglesias, & Pérez, 2002;Freeman & Watts, 1950;Regard & Landis, 1997;Short, Broderick, Patton, & Arvanitakis, 2005).…”

Cerebral bioenergetic differences measured by phosphorus‐31 magnetic resonance spectroscopy between bipolar disorder and healthy subjects living in two different regions suggesting possible effects of altitude

“…Dudley and coworkers reported decreased ATP in WM of the right hemisphere in adolescents with BD and its probable association with the downregulation of a brain isoform of creatine kinase (CK) in BD . Of note, several neuroimaging studies have reported that right hemisphere abnormalities are associated with BD, which suggests a right hemispheric dominance of dysfunctional mood regulation. In addition, we found lower intracellular pH in BD, which was also in line with the previous literature .…”