Right hemisphere dominance for understanding the intentions of others: evidence from a split-brain patient

Ortigue, Stéphanie; King, Danielle R.; Gazzaniga, Michael S.; Miller, Michael B.; Grafton, Scott T.

doi:10.1136/bcr.07.2008.0593

Cited by 16 publications

(19 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This conclusion has been recently supported by a study, prompted by the results of the present experiment, carried out on a split-brain patient [76]. This patient was tested in two conditions: “means inference” task and “intention inference” task.…”

Section: Discussionsupporting

confidence: 75%

Understanding Actions of Others: The Electrodynamics of the Left and Right Hemispheres. A High-Density EEG Neuroimaging Study

et al. 2010

View full text Add to dashboard Cite

BackgroundWhen we observe an individual performing a motor act (e.g. grasping a cup) we get two types of information on the basis of how the motor act is done and the context: what the agent is doing (i.e. grasping) and the intention underlying it (i.e. grasping for drinking). Here we examined the temporal dynamics of the brain activations that follow the observation of a motor act and underlie the observer's capacity to understand what the agent is doing and why.Methodology/Principal FindingsVolunteers were presented with two-frame video-clips. The first frame (T0) showed an object with or without context; the second frame (T1) showed a hand interacting with the object. The volunteers were instructed to understand the intention of the observed actions while their brain activity was recorded with a high-density 128-channel EEG system. Visual event-related potentials (VEPs) were recorded time-locked with the frame showing the hand-object interaction (T1). The data were analyzed by using electrical neuroimaging, which combines a cluster analysis performed on the group-averaged VEPs with the localization of the cortical sources that give rise to different spatio-temporal states of the global electrical field. Electrical neuroimaging results revealed four major steps: 1) bilateral posterior cortical activations; 2) a strong activation of the left posterior temporal and inferior parietal cortices with almost a complete disappearance of activations in the right hemisphere; 3) a significant increase of the activations of the right temporo-parietal region with simultaneously co-active left hemispheric sources, and 4) a significant global decrease of cortical activity accompanied by the appearance of activation of the orbito-frontal cortex.Conclusions/SignificanceWe conclude that the early striking left hemisphere involvement is due to the activation of a lateralized action-observation/action execution network. The activation of this lateralized network mediates the understanding of the goal of object-directed motor acts (mirror mechanism). The successive right hemisphere activation indicates that this hemisphere plays an important role in understanding the intention of others.

show abstract

Section: Discussionsupporting

confidence: 75%

Understanding Actions of Others: The Electrodynamics of the Left and Right Hemispheres. A High-Density EEG Neuroimaging Study

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Picture sequences showed successful outcomes or failures. Response times showed a double dissociation between the responding hand and the question posed to the patient (Ortigue et al, 2009a). The left hemisphere showed greater sensitivity when responding to how an action was performed and the right hemisphere to why an action was performed (did the agent intend to achieve this outcome).…”

Section: End State and Contextmentioning

confidence: 99%

Decoding intention: A neuroergonomic perspective

Grafton

Tipper

2012

NeuroImage

View full text Add to dashboard Cite

Decoding the intentions of other people based on non-linguistic cues such as their body movement is a major requirement of many jobs. Whether it is maintaining security at an airport or negotiating with locals in a foreign country, there is a need to augment maximize the effectiveness of training or real-time performance in this decoding process. This review considers the potential utility of neuroergonomic solutions, and in particular, of electroencephalographic (EEG) methods for augmenting action understanding. Focus is given to body movements and hand-object interactions, where there is a rapid growth in relevant science. The interpretation of EEG-based signals is reinforced by a consideration of functional magnetic resonance imaging experiments demonstrating underlying brain mechanisms that support goal oriented action. While no EEG method is currently implemented as a practical application for enhancing the understanding of unspoken intentions, there are a number of promising approaches that merit further development.

show abstract

“…We tested our hypotheses among 60 participants performing a standardized motor intention inference task (Ortigue, King, Gazzaniga, Miller, & Grafton, 2009). We investigated the extent to which facilitation effects occur in response latency measures among 10 dyads in a passionate love relationship (Study 1); 10 dyads in a companionate relationship (Study 2); and 10 pairs of strangers (Study 3).…”

Section: General Proceduresmentioning

confidence: 99%

Implicit priming of embodied cognition on human motor intention understanding in dyads in love

Ortigue

Patel

Bianchi‐Demicheli

et al. 2010

Journal of Social and Personal Relationships

View full text Add to dashboard Cite

Recent theories of embodied cognition suggest that congruence between observed actions and integrated templates of self-related motor experiences facilitates intention understanding of significant others. We tested this hypothesis in 60 participants using response latency measures and a motor intention inference task, which involved video clips of actions performed either by themselves, their beloved partner, or by acquaintances or strangers (as controls). Results show significantly faster reaction times when participants had to understand the intentions of themselves and their significant others, especially if they reported being passionately in love with their significant others. These findings provide an account for facilitation effects of embodied cognition on intention understanding among dyads in love.

show abstract

Right hemisphere dominance for understanding the intentions of others: evidence from a split-brain patient

Cited by 16 publications

References 16 publications

Understanding Actions of Others: The Electrodynamics of the Left and Right Hemispheres. A High-Density EEG Neuroimaging Study

Understanding Actions of Others: The Electrodynamics of the Left and Right Hemispheres. A High-Density EEG Neuroimaging Study

Decoding intention: A neuroergonomic perspective

Implicit priming of embodied cognition on human motor intention understanding in dyads in love

Contact Info

Product

Resources

About