Functional Laterality

Publication Title: 
Brain and Cognition

The most diffuse forms of meditation derive from Hinduism and Buddhism spiritual traditions. Different cognitive processes are set in place to reach these meditation states. According to an historical-philological hypothesis (Wynne, 2009) the two forms of meditation could be disentangled.

Author(s): 
Tomasino, Barbara
Chiesa, Alberto
Fabbro, Franco
Publication Title: 
Brain and Cognition

The most diffuse forms of meditation derive from Hinduism and Buddhism spiritual traditions. Different cognitive processes are set in place to reach these meditation states. According to an historical-philological hypothesis (Wynne, 2009) the two forms of meditation could be disentangled.

Author(s): 
Tomasino, Barbara
Chiesa, Alberto
Fabbro, Franco
Publication Title: 
Laterality

A theory of the genetic basis of cerebral asymmetry is outlined according to which (1) a single right-shift factor in all human individuals interacts with (2) epigenetic variation that is apparently random, transmissible between parent and child, but with a half-life extending over a small number of generations. The right-shift factor arose late (150 to 200 thousand years ago [KYA]) in hominid evolution as a mutation in the X copy of a gene pair (Protocadherin 11XY) in a region of homology between the X and Y chromosomes created by a duplication 6MYA at the chimpanzee hominid separation.

Author(s): 
Crow, T. J.
Publication Title: 
Psychiatry Research

Mixed-handedness was reported indicative of schizotypy, relevant to psychosis and schizophrenia. However, studies suffered from validity threats and did not systematically investigate associations with footedness. Moreover, there is a dearth of studies in the general population and it is currently untested whether widely used self-report scales measure schizotypy in a comparable way in student and community samples.

Author(s): 
Tran, Ulrich S.
Stieger, Stefan
Voracek, Martin
Publication Title: 
The International Journal of Neuroscience

The human hypothalamus produces an endogenous membrane Na+-K+ ATPase inhibitor, digoxin, which can regulate neuronal transmission. The digoxin status and neurotransmitter patterns were studied in individuals with a predilection to fall in love. It was also studied in individuals with differing hemispheric dominance to find out the role of cerebral dominance in this respect.

Author(s): 
Kurup, Ravi Kumar
Kurup, Parameswara Achutha
Publication Title: 
The American Journal of Psychiatry

OBJECTIVE: Separation from loved ones commonly leads to grief reactions. In some individuals, grief can evolve into a major depressive episode. The brain regions involved in grief have not been specifically studied. The authors studied brain activity in women actively grieving a recent romantic relationship breakup. It was hypothesized that while remembering their ex-partner, subjects would have altered brain activity in regions identified in sadness imaging studies: the cerebellum, anterior temporal cortex, insula, anterior cingulate, and prefrontal cortex.

Author(s): 
Najib, Arif
Lorberbaum, Jeffrey P.
Kose, Samet
Bohning, Daryl E.
George, Mark S.
Publication Title: 
Journal of Neurophysiology

Early-stage romantic love can induce euphoria, is a cross-cultural phenomenon, and is possibly a developed form of a mammalian drive to pursue preferred mates. It has an important influence on social behaviors that have reproductive and genetic consequences. To determine which reward and motivation systems may be involved, we used functional magnetic resonance imaging and studied 10 women and 7 men who were intensely "in love" from 1 to 17 mo.

Author(s): 
Aron, Arthur
Fisher, Helen
Mashek, Debra J.
Strong, Greg
Li, Haifang
Brown, Lucy L.
Publication Title: 
Laterality

Kissing behaviour was observed between kissing couples: about 80% turned their heads to the right to kiss. To remove the influence of one kissing partner upon the other, kissing behaviour was also observed between participants and a symmetrical doll's face: about 77% turned their heads to the right to kiss. There was no significant difference in handedness between right- and left-kissers: both groups were predominantly right-kissers. It is thought that motor bias rather than emotive bias influences kissing behaviour.

Author(s): 
Barrett, Dianne
Greenwood, Julian G.
McCullagh, John F.
Publication Title: 
Psychiatry Research

Functional neuroimaging studies have shown that romantic love and maternal love are mediated by regions specific to each, as well as overlapping regions in the brain's reward system. Nothing is known yet regarding the neural underpinnings of unconditional love. The main goal of this functional magnetic resonance imaging study was to identify the brain regions supporting this form of love. Participants were scanned during a control condition and an experimental condition.

Author(s): 
Beauregard, Mario
Courtemanche, JÈrÙme
Paquette, Vincent
St-Pierre, Evelyne Landry
Publication Title: 
Neuropsychobiology

BACKGROUND: Brain activity was studied in grief following frustrated love compared to romantic love, and it was hypothesized that unhappy lovers compared to happy lovers would have decreased brain activity in regions specific to emotional and reward circuits, such as frontal brain areas, anterior cingulate cortex (ACC), bilateral insula or posterior cingulate cortex (PCC). METHODS: Twelve volunteers intensely in love and 12 volunteers recently separated from their romantic partners were scanned performing 3 runs of functional magnetic resonance imaging acquisition.

Author(s): 
Stoessel, Christina
Stiller, Juliane
Bleich, Stefan
Bˆnsch, Dominikus
Boensch, Dominikus
Doerfler, Arnd
Garcia, Meritxell
Richter-Schmidinger, Tanja
Kornhuber, Johannes
Forster, Clemens

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