Multifactorial interactions involved in linear self-transport distance estimate: a place for time

Israël, I.; Capelli, Aurore; Sablé, D.; Laurent, Camille; Lecoq, Charles; Bredin, Jonathan

doi:10.1016/j.ijpsycho.2004.01.002

Cited by 18 publications

(19 citation statements)

References 25 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The different perception of body rotations during the acceleration and deceleration phases could also be linked to the different effects of these phases on time perception, as reported in several papers (e.g., Israël et al, 2004; Capelli and Israël, 2007; Binetti et al, 2010, 2013). These studies showed that one perceives the time as being faster during body acceleration and as being shorter during deceleration.…”

Section: Discussionmentioning

confidence: 74%

Biases in the perception of self-motion during whole-body acceleration and deceleration

Tremblay¹,

Kennedy²,

Paleressompoulle³

et al. 2013

Front. Integr. Neurosci.

View full text Add to dashboard Cite

Several studies have investigated whether vestibular signals can be processed to determine the magnitude of passive body motions. Many of them required subjects to report their perceived displacements offline, i.e., after being submitted to passive displacements. Here, we used a protocol that allowed us to complement these results by asking subjects to report their introspective estimation of their displacement continuously, i.e., during the ongoing body rotation. To this end, participants rotated the handle of a manipulandum around a vertical axis to indicate their perceived change of angular position in space at the same time as they were passively rotated in the dark. The rotation acceleration (Acc) and deceleration (Dec) lasted either 1.5 s (peak of 60°/s2, referred to as being “High”) or 3 s (peak of 33°/s2, referred to as being “Low”). The participants were rotated either counter-clockwise or clockwise, and all combinations of acceleration and deceleration were tested (i.e., AccLow-DecLow; AccLow-DecHigh; AccHigh-DecLow; AccHigh-DecHigh). The participants’ perception of body rotation was assessed by computing the gain, i.e., ratio between the amplitude of the perceived rotations (as measured by the rotating manipulandum’s handle) and the amplitude of the actual chair rotations. The gain was measured at the end of the rotations, and was also computed separately for the acceleration and deceleration phases. Three salient findings resulted from this experiment: (i) the gain was much greater during body acceleration than during body deceleration, (ii) the gain was greater during High compared to Low accelerations and (iii) the gain measured during the deceleration was influenced by the preceding acceleration (i.e., Low or High). These different effects of the angular stimuli on the perception of body motion can be interpreted in relation to the consequences of body acceleration and deceleration on the vestibular system and on higher-order cognitive processes.

show abstract

Section: Discussionmentioning

confidence: 74%

Biases in the perception of self-motion during whole-body acceleration and deceleration

Tremblay¹,

Kennedy²,

Paleressompoulle³

et al. 2013

Front. Integr. Neurosci.

View full text Add to dashboard Cite

show abstract

“…As the vestibular system is the only sensory organ whose primary function is self-motion detection, some investigators [13] examined the conditions under which the otoliths, which detect the linear acceleration of the head, could be used to estimate distance traveled. Calcium is very important in the functioning of the inner ear and is the main component of the otoliths.…”

Section: Discussionmentioning

confidence: 99%

Observation of the morphology and calcium content of vestibular otoconia in rats after simulated weightlessness

Zhang

Peng

Yang

et al. 2005

Acta Oto-Laryngologica

View full text Add to dashboard Cite

Reduction in bone formation may have been the main reason for the lower calcium content of the otoconia after simulated weightlessness in rats. The head-ward distribution of blood volume may explain the morphological changes observed in the middle and inner ears. To observe morphological changes in the vestibular organs and measure the calcium content of otoconia in rats after simulated weightlessness. We used a tail suspension model of simulated weightlessness and then investigated changes in the vestibular organs using scanning electron microscopy and X-ray microanalysis. In comparison to untreated rats, the vestibular otoconia of the rats subjected to simulated weightlessness were small, irregularly shaped or fissured, and were arranged loosely and out of order. In addition, the calcium content of the otoconia was markedly decreased.

show abstract

“…I speculate that an additional factor may be responsible for distorted sense of agency in vestibular patients: a temporal mismatch between an action and the sensory feedback from this action. Interestingly, perception of time is altered in vestibular patients (Israel et al, 2004) and introducing a delay between the executed and seen movement disturb agency (Franck et al, 2001). Neuroimaging studies have revealed that the insula and the temporo-parietal junction are involved in agency (Spence et al, 1997; Farrer and Frith, 2002; Farrer et al, 2003a, 2004, 2008b).…”

Section: Agencymentioning

confidence: 99%

A neuroscientific account of how vestibular disorders impair bodily self-consciousness

Lopez

2013

Front. Integr. Neurosci.

View full text Add to dashboard Cite

The consequences of vestibular disorders on balance, oculomotor control, and self-motion perception have been extensively described in humans and animals. More recently, vestibular disorders have been related to cognitive deficits in spatial navigation and memory tasks. Less frequently, abnormal bodily perceptions have been described in patients with vestibular disorders. Altered forms of bodily self-consciousness include distorted body image and body schema, disembodied self-location (out-of-body experience), altered sense of agency, as well as more complex experiences of dissociation and detachment from the self (depersonalization). In this article, I suggest that vestibular disorders create sensory conflict or mismatch in multisensory brain regions, producing perceptual incoherence and abnormal body and self perceptions. This hypothesis is based on recent functional mapping of the human vestibular cortex, showing vestibular projections to the primary and secondary somatosensory cortex and in several multisensory areas found to be crucial for bodily self-consciousness.

show abstract

Multifactorial interactions involved in linear self-transport distance estimate: a place for time

Cited by 18 publications

References 25 publications

Biases in the perception of self-motion during whole-body acceleration and deceleration

Biases in the perception of self-motion during whole-body acceleration and deceleration

Observation of the morphology and calcium content of vestibular otoconia in rats after simulated weightlessness

A neuroscientific account of how vestibular disorders impair bodily self-consciousness

Contact Info

Product

Resources

About