Space Coding in Primate Posterior Parietal Cortex

Bremmer, Frank; Schlack, Anja; Duhamel, Jean‐René; Graf, Werner; Fink, Gereon R.

doi:10.1006/nimg.2001.0817

Cited by 191 publications

(98 citation statements)

References 28 publications

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“…This result reinforced the assumed role of the left angular gyrus in love intensity . Interestingly, the temporo-parietal junction, and notably the angular gyrus, is an associative brain area considered to be pivotal in carrying out cross-modal information (Calvert et al, 2000;Bremmer et al, 2001), episodic memory retrieval, conceptual knowledge and metaphors (Ashby and O'Brien, 2005;von Bubnoff, 2005, Jackson et al, 2006Ortigue et al, 2007;Saxe and Kanwisher, 2003). Thus, the present correlation between this brain region and love intensity reinforces that such higher order mechanisms can take place in the abstract concept of love (e.g., Aron et al, 2005;Bianchi-Demicheli et al, 2006;Brehm et al, 2002;Buss, 2003;Fisher, 2004;Sternberg and Barnes, 1988).…”

Section: An Angular-centered Network For Lovesupporting

confidence: 65%

Correlation between insula activation and self-reported quality of orgasm in women

2007

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Current multidimensional models of women's sexual function acknowledge the implicit impact of psychosocial factors on women's sexual function. Interaction between human sexual function and intensity of love has been also assumed, even if love is not an absolute condition. Yet, whereas great insights have been made in understanding the central mechanisms of the peripheral manifestations of women's sexual response, including orgasm, the cerebral correlates sustaining the interaction between women's sexual satisfaction and the unconscious role of the partner in this interpersonal experience remain unknown.Using functional imaging, we assessed brain activity elicited when 29 healthy female volunteers were unconsciously exposed to the subliminal presentation of their significant partner's name (a task known to elicit a partner-related neural network) and correlated it with individual scores obtained from different sexual dimensions: selfreported partnered orgasm quality (ease, satisfaction, frequency), love intensity and emotional closeness with that partner.Behavioral results identified a correlation between love and selfreported partnered orgasm quality. The more women were in love/ emotionally close to their partner, the more they tended to report being satisfied with the quality of their partnered orgasm. However, no relationship was found between intensity of love and partnered orgasm frequency.Neuroimaging data expanded these behavioral results by demonstrating the involvement of a specific left-lateralized insula focus of neural activity correlating with orgasm scores, irrespective of dimension (frequency, ease, satisfaction). In contrast, intensity of being in love was correlated with a network involving the angular gyrus.These findings strongly suggest that intimate and sexual relationships are sustained by partly different mechanisms, even if they share some emotional-related mechanisms. The critical correlation between self-reports of orgasm quality and activation of the left anterior insula, a part of the partner-related neural network known to play a pivotal role in somatic processes, suggests the importance of somatic information in the integration of sexual experience. On the other hand, the correlation between activation of the angular gyrus and love intensity reinforces the assumption that the representation of love calls for higher order cognitive levels, such as those related to the generation of abstract concepts. By highlighting the specific role of the anterior insula in the way women integrate components of physical satisfaction in the context of an intimate relationship with a partner, the current findings take a step in the understanding of a woman's sexual pleasure.

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Section: An Angular-centered Network For Lovesupporting

confidence: 65%

Correlation between insula activation and self-reported quality of orgasm in women

2007

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“…This, in turn, provides an online, multisensory representation of visual information in peripersonal space centered on active body parts (see Graziano, 2001;Graziano & Gross, 1998) and is also involved in directing spatial attention (Bremmer, Schlack, Duhamel, Graf, & Fink, 2001;Halligan, Fink, Marshall, & Vallar, 2003). This bimodal integration mechanism has been made responsible for earlier findings of a near-hand advantage for visual attention in search, detection, and attentional blink tasks (cf.…”

Section: Discussionmentioning

confidence: 96%

Continuous hand movement induces a far-hand bias in attentional priority

Festman

Adam

Pratt

et al. 2013

Atten Percept Psychophys

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Previous research on the interaction between manual action and visual perception has focused on discrete movements or static postures and discovered better performance near the hands (the near-hand effect). However, in everyday behaviors, the hands are usually moving continuously between possible targets. Therefore, the current study explored the effects of continuous hand motion on the allocation of visual attention. Eleven healthy adults performed a visual discrimination task during cyclical concealed hand movements underneath a display. Both the current hand position and its movement direction systematically contributed to participants' visual sensitivity. Discrimination performance increased substantially when the hand was distant from but moving toward the visual probe location (a far-hand effect). Implications of this novel observation are discussed.

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“…Another vestibular area has been described in the posterior parietal cortex and was activated during caloric and galvanic vestibular stimulations particularly in the intraparietal sulcus [50,85,112] and superior parietal lobule [118]. These regions are likely homologous to monkey area 7 [82] and the ventral and medial intraparietal areas [27,77] receiving vestibular information as well as visual, somatosensory and auditory cues. There is finally evidence of vestibular projections to the primary motor and premotor cortices (including also the frontal eye fields), and to the inferior frontal gyrus, in relation to the vestibular control of motor and oculomotor functions [6,47,50,85,94].…”

Section: The Vestibular Cortexmentioning

confidence: 94%

Body ownership and embodiment: Vestibular and multisensory mechanisms

Lopez

Halje

Blanke

2008

Neurophysiologie Clinique/Clinical Neurophysiology

236

163

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Summary Body ownership and embodiment are two fundamental mechanisms of selfconsciousness. The present article reviews neurological data about paroxysmal illusions during which body ownership and embodiment are affected differentially: autoscopic phenomena (out-of-body experience, heautoscopy, autoscopic hallucination, feeling-of-a-presence) and the room tilt illusion. We suggest that autoscopic phenomena and room tilt illusion are related to different types of failures to integrate body-related information (vestibular, proprioceptive and tactile cues) in addition to a mismatch between vestibular and visual references. In these patients, altered body ownership and embodiment has been shown to occur due to pathological activity at the temporoparietal junction and other vestibular-related areas arguing for a key importance of vestibular processing. We also review the possibilities of manipulating body ownership and embodiment in healthy subjects through exposition to weightlessness as well as caloric and galvanic stimulation of the peripheral vestibular apparatus. In healthy subjects, disturbed self-processing might be related to interference of vestibular stimulation with vestibular cortex leading to disintegration of bodily information and altered body ownership and embodiment. We finally propose a differential contribution of the vestibular cortical areas to the different forms of altered body ownership and embodiment. Résumé L'attribution du corps propre et de ses éléments constitutifs (body ownership), ainsi que le sentiment d'incarnation (embodiment) -le fait d'habiter ce corps, d'être localisé dans les limites physiques de ce corps -, sont deux éléments fondamentaux de la conscience de soi. Nous faisons ici la synthèse de données issues de la neurologie montrant que des manifestations paroxystiques telles que les phénomènes autoscopiques (expérience de sortie du corps, héautoscopie, hallucination autoscopique, sensation de présence) et l'illusion de bascule de l'environnement (room tilt illusion) se caractérisent par une atteinte différentielle des mécanismes d'attribution du corps propre et du sentiment d'incarnation. Nous faisons l'hypothèse que les différents phénomènes autoscopiques et l'illusion de bascule de l'environnement se caractérisent par différents patrons de déficits d'intégration des informations sensorielles corporelles (informations visuelles, musculaires proprioceptives et tactiles) combinés à une perte de cohérence entre les références visuelles et vestibulaires. Chez les patients souffrant de phénomènes autoscopiques, les déficits d'attribution du corps propre et du sentiment d'incarnation ont été liés à un dysfonctionnement au niveau de la jonction temporopariétale et d'autres régions corticales recevant des informations vestibulaires, suggérant une contribution importante des afférences vestibulaires dans les mécanismes de la conscience de soi. Nous rapportons également des données de la littérature recueillies chez des sujets sains suggérant la possibilité de manipuler l'attribution ...

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Space Coding in Primate Posterior Parietal Cortex

Cited by 191 publications

References 28 publications

Correlation between insula activation and self-reported quality of orgasm in women

Correlation between insula activation and self-reported quality of orgasm in women

Continuous hand movement induces a far-hand bias in attentional priority

Body ownership and embodiment: Vestibular and multisensory mechanisms

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