Line Bisection in the Split Brain.

Hausmann, Markus; Corballis, Michael C.; Farbi, Mara

doi:10.1037/0894-4105.17.4.602

Cited by 47 publications

(32 citation statements)

References 40 publications

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“…To investigate whether the effect observed in Experiment 1 is specific to emotion lateralization or can be replicated in a lateralized task that is purely cognitive in nature, we conducted Experiment 2. When asked to manually bisect horizontal lines in the center, participants usually deviate towards the left of the veridical center (e.g., Hausmann et al, 2002;2003a;2003b) -a phenomenon called pseudoneglect (Bowers and Heilman, 1980a). …”

Section: Methodsmentioning

confidence: 99%

“…Hausmann et al, 2002;2003a;2003b;Najt et al, 2013). The task was comprised of 17 horizontal, black lines of 1 mm width on a white sheet of A4 paper.…”

Section: Line Bisection (Lb) Taskmentioning

confidence: 99%

“…2 (Moonlight Sonata) as expressing happiness and sadness, respectively. Four experiments were performed in which we investigated the effects of music listening, and corresponding changes in mood, on three well established laterality tasks: i) an emotional chimeric faces task, originally developed by Levy et al, (1983) (Experiment 1), ii) a lateralized spatial attention task (visual line bisection; e.g., Hausmann, 2002;2003a;2003b) (Experiment 2), and iii) a verbal consonant-vowel dichotic listening task (Hugdahl, 1995(Hugdahl, , 2003 (Experiment 3 and 4). With reference to the valence hypothesis, it was hypothesised that listening to the happy excerpt will increase participants' positive emotions, thereby increasing left frontal activation, and consequently diminishing the right hemispheric bias typically reported for the emotional chimeric faces (Experiment 1) and visual line bisection task (Experiment 2).…”

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confidence: 99%

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Music-induced changes in functional cerebral asymmetries

Hausmann

Hodgetts

Eerola

2016

Brain and Cognition

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Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractAfter decades of research, it remains unclear whether emotion lateralization occurs because one hemisphere is dominant for processing the emotional content of the stimuli, or whether emotional stimuli activate lateralised networks associated with the subjective emotional experience. By using emotion-induction procedures, we investigated the effect of listening to happy and sad music on three well-established lateralization tasks. In a prestudy, Mozart's piano sonata (K.448) and Beethoven's Moonlight Sonata were rated as the most happy and sad excerpts, respectively. Participants listened to either one emotional excerpt, or sat in silence before completing an emotional chimeric faces task (Experiment 1), visual line bisection task (Experiment 2) and a dichotic listening task (Experiment 3 and 4). Listening to happy music resulted in a reduced right hemispheric bias in facial emotion recognition (Experiment 1) and visuospatial attention (Experiment 2) and increased left hemispheric bias in language lateralization (Experiment 3 and 4). Although Experiment 1-3 revealed an increased positive emotional state after listening to happy music, mediation analyses revealed that the effect on hemispheric asymmetries was not mediated by music-induced emotional changes. The direct effect of music listening on lateralization was investigated in Experiment 4 in which tempo of the happy excerpt was manipulated by controlling for other acoustic features. However, the results of Experiment 4 made it rather unlikely that tempo is the critical cue accounting for the effects. We conclude that listening to music can affect functional cerebral asymmetries in well-established emotional and cognitive laterality tasks, independent of music-induced changes in the emotion state.

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Section: Methodsmentioning

confidence: 99%

“…Hausmann et al, 2002;2003a;2003b;Najt et al, 2013). The task was comprised of 17 horizontal, black lines of 1 mm width on a white sheet of A4 paper.…”

Section: Line Bisection (Lb) Taskmentioning

confidence: 99%

mentioning

confidence: 99%

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Music-induced changes in functional cerebral asymmetries

Hausmann

Hodgetts

Eerola

2016

Brain and Cognition

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“…Crucially, however, one challenge to the interpretation that the ECFT strongly supports the Right Hemisphere Hypothesis is that the leftward bias is not a phenomenon restricted to emotional chimeric faces but also applies to visuospatial attention. This is demonstrated in numerous tasks, such as line bisection in neurotypical individuals, and has been termed 'pseudoneglect' (Bowers & Heilman, 1980;Hausmann, 2005;Hausmann, Corballis, & Fabri, 2003, Hausmann, Ergun, Yazgan, & Güntürkün, 2002see Jewell & McCourt, 2000, for a review). In much the same way that a left hemiface bias in the ECFT is thought to indicate right hemispheric emotional face processing, the leftward biases shown towards stimuli in pseudoneglect tasks suggest a right hemispheric dominance in the allocation of attention, and as such stimuli in the left visual space are favoured over those in the right visual space (e.g., Hausmann, Corballis, & Fabri, 2003).…”

Section: Introductionmentioning

confidence: 99%

A leftward bias however you look at it: Revisiting the emotional chimeric face task as a tool for measuring emotion lateralization

Innes

Burt

Birch

et al. 2015

Laterality: Asymmetries of Body, Brain and Cognition

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(2016) 'A leftward bias however you look at it : revisiting the emotional chimeric face task as a tool for measuring emotion lateralization.', Laterality., 21 (4-6). pp. 643-661. Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractLeft hemiface biases observed within the Emotional Chimeric Face Task (ECFT) support emotional face perception models whereby all expressions are preferentially processed by the right hemisphere. However, previous research using this task has not considered that the visible midline between hemifaces might engage atypical facial emotion processing strategies in upright or inverted conditions, nor controlled for left visual field (thus right hemispheric)visuospatial attention biases. This study used novel emotional chimeric faces (blended at the midline) to examine laterality biases for all basic emotions. Left hemiface biases were demonstrated across all emotional expressions and were reduced, but not reversed, for inverted faces. The ECFT bias in upright faces was significantly increased in participants with a large attention bias. These results support the theory that left hemiface biases reflect a genuine bias in emotional face processing, and this bias can interact with attention processes similarly localized in the right hemisphere.3

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“…However, another explanation could be found in the literature on split-brain patients. In fact, several studies carried out with split-brain patients showed -only following total resection -a sort of attentional deficit of the right hemisphere [58,59,24]. In the present study, the use of the sole right hand in providing responses, makes it difficult to conclude if D.D.V.…”

Section: Discussionmentioning

confidence: 75%