Cerebral specialization during lucid dreaming: A right hemisphere hypothesis.

Dreaming ◽  
2009 ◽  
Vol 19 (4) ◽  
pp. 273-286 ◽  
Author(s):  
Robert Piller
Keyword(s):  
Right Hemisphere ◽  
Lucid Dreaming ◽  
Right Hemisphere Hypothesis

An examination of the right-hemisphere hypothesis of the lateralization of emotion

2005 ◽  
Vol 57 (2) ◽  
pp. 210-213 ◽  
Author(s):  
Stephen D. Smith ◽  
M. Barbara Bulman-Fleming
Keyword(s):  
Right Hemisphere ◽  
Right Hemisphere Hypothesis ◽  
The Right

scholarly journals Keep a Left Profile, Baby! The Left-Cradling Bias Is Associated with a Preference for Left-Facing Profiles of Human Babies

Symmetry ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 911 ◽  
Author(s):  
Gianluca Malatesta ◽  
Daniele Marzoli ◽  
Luca Tommasi
Keyword(s):  
Hemispheric Asymmetry ◽  
Right Hemisphere ◽  
Female Preference ◽  
Human Infant ◽  
Emotional Information ◽  
Face To Face ◽  
Empirical Success ◽  
Right Hemisphere Hypothesis ◽  
Left And Right ◽  
The Right

The left-cradling bias (LCB) refers to the (typically female) preference to hold an infant on the left side of one’s own body. Among the three main accounts proposed for such a phenomenon, namely the “handedness”, “heartbeat” and “hemispheric asymmetry” hypotheses, the latter has met with the greatest empirical success. Accordingly, the LCB would facilitate the communication of socio-emotional information through the right hemisphere of both the cradled and the cradling individual, and should emerge mainly in face-to-face interactions. In this regard, it should be noticed that when the infant’s body is oriented toward the cradler, the left or right side of their face is relatively more visible to left- and right-cradlers, respectively. Therefore, we hypothesized that the LCB might also be associated with a preference for left-facing profiles (i.e., those showing the left, and more expressive, hemiface/cheek) of human babies. In order to test our hypothesis, we assessed the cradling-side preferences of female participants, as well as their preference for the left- or right-facing profile of a human infant depicted in a drawing. Left-cradlers exhibited a significantly larger preference for the left-facing version of the drawing compared with right-cradlers, a finding further corroborating the right-hemisphere hypothesis.

scholarly journals Differential Hemispheric Lateralization of Emotions and Related Display Behaviors: Emotion-Type Hypothesis

2021 ◽  
Vol 11 (8) ◽  
pp. 1034
Author(s):  
Elliott D. Ross
Keyword(s):  
Left Hemisphere ◽  
Positive Emotions ◽  
Right Hemisphere ◽  
Research Data ◽  
Hemispheric Lateralization ◽  
Social Emotions ◽  
Right Hemisphere Hypothesis ◽  
The Right ◽  
The Brain ◽  
Emotion Type

There are two well-known hypotheses regarding hemispheric lateralization of emotions. The Right Hemisphere Hypothesis (RHH) postulates that emotions and associated display behaviors are a dominant and lateralized function of the right hemisphere. The Valence Hypothesis (VH) posits that negative emotions and related display behaviors are modulated by the right hemisphere and positive emotions and related display behaviors are modulated by the left hemisphere. Although both the RHH and VH are supported by extensive research data, they are mutually exclusive, suggesting that there may be a missing factor in play that may provide a more accurate description of how emotions are lateralization in the brain. Evidence will be presented that provides a much broader perspective of emotions by embracing the concept that emotions can be classified into primary and social types and that hemispheric lateralization is better explained by the Emotion-type Hypothesis (ETH). The ETH posits that primary emotions and related display behaviors are modulated by the right hemisphere and social emotions and related display behaviors are modulated by the left hemisphere.

Facial asymmetry while posing positive and negative emotions: Support for the right hemisphere hypothesis

1988 ◽  
Vol 26 (5) ◽  
pp. 759-764 ◽  
Author(s):  
Joan C. Borod ◽  
Justine Kent ◽  
Elissa Koff ◽  
Candace Martin ◽  
Murray Alpert
Keyword(s):  
Right Hemisphere ◽  
Negative Emotions ◽  
Facial Asymmetry ◽  
Right Hemisphere Hypothesis ◽  
The Right ◽  
Positive And Negative Emotions

Right-hemisphere reading in a case of developmental deep dyslexia

2007 ◽  
Vol 60 (9) ◽  
pp. 1187-1196 ◽  
Author(s):  
Nicola J. Pitchford ◽  
Elaine Funnell ◽  
Bianca De Haan ◽  
Paul S. Morgan
Keyword(s):  
Oral Reading ◽  
Right Hemisphere ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Imaging Studies ◽  
Function Words ◽  
Phonological Skills ◽  
Right Hemisphere Hypothesis ◽  
Deep Dyslexia ◽  
The Right

The right-hemisphere hypothesis of deep dyslexia has received support from functional imaging studies of acquired deep dyslexia following damage to the left cerebral hemisphere, but no imaging studies of cases of developmental deep dyslexia, in which brain damage is not suspected, have been reported. In this paper, we report the first evidence of right hyperactivation in an adult case of developmental deep dyslexia. Hyperactivation was observed in the right inferior frontal cortex during functional magnetic resonance imaging (fMRI) of the oral reading of imageable content words and nonwords to which imageable lexical responses were frequently made. No evidence of right hyperactivation was observed in the oral reading of function words, nor during the naming of imageable words in response to pictured objects. The results reveal strategic and selective use of right-hemisphere functions for particular types of written stimuli. We propose that children with developmental deep dyslexia compensate for their lack of phonological skills by accessing right-hemisphere imageable associations that provide a mnemonic for linking written forms to spoken names.

The Effects of Valence and Arousal on Hemispheric Asymmetry of Emotion

2011 ◽  
Vol 25 (2) ◽  
pp. 95-103 ◽  
Author(s):  
Jing Zhang ◽  
Renlai Zhou ◽  
Tian P. S. Oei
Keyword(s):  
Hemispheric Asymmetry ◽  
Right Hemisphere ◽  
Event Related Potentials ◽  
Main Role ◽  
High Arousal ◽  
Late Positive Potentials ◽  
Right Hemisphere Hypothesis ◽  
Related Potentials ◽  
Valence And Arousal ◽  
The Right

The independent influence of valence and arousal on emotional hemispheric brain asymmetry was investigated to decide between three contrasting hypotheses: the right hemisphere hypothesis, the valence hypothesis, and the integrative hypothesis. Event-related potentials (ERPs) were recorded while participants (N = 20) viewed positive high arousal, positive low arousal, negative high arousal, and negative low arousal pictures, following a baseline measure of ERPs while viewing gray squares. Self-ratings of emotional state in terms of valence and arousal were taken after each of the four emotion blocks. Valence and arousal effects on hemispheric asymmetry were analyzed for the time windows 130–170, 170–280, 280–450, and 450–600 ms. Right dominance on N2 during negative high arousal and left dominance on P3 and late positive potentials during negative low arousal were found over the frontal lobe. Right dominance on P2, P3, and late positive potentials over the parietal lobes appeared during high arousal. No frontal asymmetry was found in positive emotion. Our result partly supported the integrative hypothesis and did not provide evidence for the right hemisphere hypothesis or the valence hypothesis. These results suggested that arousal plays the main role in the ERPs’ hemispheric asymmetry.

Resting Brain Asymmetry and Affective Reactivity

2005 ◽  
Vol 26 (3) ◽  
pp. 139-154 ◽  
Author(s):  
Dirk Hagemann ◽  
Johannes Hewig ◽  
Ewald Naumann ◽  
Jan Seifert ◽  
Dieter Bartussek
Keyword(s):  
Right Hemisphere ◽  
Emotional Responses ◽  
Automatic Generation ◽  
Emotional Reactions ◽  
Brain Asymmetry ◽  
Film Clips ◽  
Right Hemisphere Hypothesis ◽  
Neuropsychological Evidence ◽  
The Right ◽  
Recent Formulation

Abstract. Neuropsychological evidence has given rise to alternative models on brain asymmetry in emotion, each with different implications concerning the biological basis of individual differences in affective responses. The present study tested these implications. Resting EEG and self-reported emotions after the presentation of film clips were collected on four occasions of measurement. Subjects with greater right-sided and smaller left-sided cortical activity reported greater intensities of felt emotions after the presentation of films irrespective of valence. This finding is in line with a recent formulation of the right-hemisphere hypothesis, which proposes that the right hemisphere may play an important role in the automatic generation of emotional responses, whereas the left hemisphere may be involved in the control and modulation of emotional reactions.

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