Neuronal substrates of haptic shape encoding and matching: A functional magnetic resonance imaging study

Miqueé, Aline; Xerri, Christian; Rainville, Constant; Anton, Jean-Luc; Nazarian, Bruno; Roth, Muriel; Zennou-Azogui, Yohʼi

doi:10.1016/j.neuroscience.2007.12.021

Cited by 55 publications

(52 citation statements)

References 73 publications

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“…Haptic-shape selectivity resulted in activation in the right intraparietal sulcus (IPS), a region related to somatosensory shape representations (Bodegard et al, 2000;Stoesz et al, 2003;Miquee et al, 2007), but failed to activate shape-selective LOC . LOC has been found to encode texture information and since both the [haptic-texture > rest] and [haptic-shape > rest] contrasts revealed LOC activation, it is likely that LOC was encoding aspects of haptic texture in addition to haptic shape.…”

Section: Discussionmentioning

confidence: 99%

Are visual texture-selective areas recruited during haptic texture discrimination?

2014

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Section: Discussionmentioning

confidence: 99%

Are visual texture-selective areas recruited during haptic texture discrimination?

2014

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“…Several neuroimaging studies have reported considerable overlap between the brain areas involved in haptic and visual object recognition, with the lateral occipital complex (LOC) particularly highlighted for its involvement in processing of 3-D shape (Amedi, Jacobson, Hend ler, Malach, & Zohary, 2002;Amedi, Malach, Hendler, Peled, & Zohary, 2001;Amedi, von Kriegstein, van Atteveldt, Beauchamp, & Naumer, 2005;Deibert, Kraut, Kremen, & Hart, 1999;James, Humphrey, Gati, Servos, et al, 2002;James, Kim, & Fisher, 2007;Miquée et al, 2008;Zhang, Weisser, Stilla, Prather, & Sathian, 2004). Size invariance and orientation dependence have been observed in the LOC in response to visual inputs Vuilleu mier, Henson, Driver, & Dolan, 2002), but such manipulations have yet to be systematically investigated for haptic inputs.…”

Section: Visual Size-change Effectsmentioning

confidence: 99%

The effects of size changes on haptic object recognition

Craddock

Lawson

2009

Attention, Perception, & Psychophysics

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Two experiments examined the effects of size changes on haptic object recognition. In Experiment 1, participants named one of three exemplars (a standard-size-and-shape, different-size, or different-shape exemplar) of 36 categories of real, familiar objects. They then performed an old/new recognition task on the basis of object identity for the standard exemplars of all 36 objects. Half of the participants performed both blocks visually; the other half performed both blocks haptically. The participants were able to efficiently name unusually sized objects haptically, consistent with previous findings of good recognition of small-scale models of stimuli (Lawson, in press). However, performance was impaired for both visual and haptic old/new recognition when objects changed size or shape between blocks. In Experiment 2, participants performed a short-term haptic shapematching task using 3-D plastic models of familiar objects, and as in Experiment 1, a cost emerged for ignoring the irrelevant size change. Like its visual counterpart, haptic object recognition incurs a significant but modest cost for generalizing across size changes.

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“…discrimination, the spatial features of the object are extracted and subsequently, higher cognitive processing integrates these features into a mental representation of the object's shape Dukelow et al 2010;Au-Yeung and Hui-Chan 2009;Miquée et al 2008).…”

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confidence: 99%

Frontoparietal involvement in passively guided shape and length discrimination: a comparison between subcortical stroke patients and healthy controls

et al. 2012

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Fifty to 85 % of patients with sensorimotor hemiparesis following stroke encounter impaired tactile processing and proprioception. Sensory feedback is, however, paramount for motor recovery. Sensory feedback through passively guided somatosensory discrimination exercises has been used in therapy, but so far, no studies have investigated which brain areas are involved in this process. Therefore, we performed a study with functional magnetic resonance imaging (fMRI) to examine brain areas related to discriminating passively guided shape and length discrimination in stroke patients and evaluate whether they differed from healthy age-matched controls. Eight subcortical stroke patients discriminated different shapes or length based on passive finger movements provided by an fMRI compatible robot. The data were contrasted to a control condition whereby patients discriminated music fragments. Passively guided somatosensory discrimination versus music discrimination elicited activation in similar frontoparietal areas in stroke patients compared to the healthy control group. Still, patients had increased activation in the right angular gyrus, left superior lingual gyrus, and right cerebellar lobule VI compared to healthy volunteers. Conversely, healthy volunteers activated the right precentral gyrus to a greater extent than patients. In both groups, shape discrimination resulted in anterior intraparietal sulcus and premotor activation, while length discrimination elicited a more medially located parietal activation with mainly right-sided premotor activity. The current study is a first step in clarifying brain activations during passively guided shape and length discrimination in subcortical stroke patients. Research into the effects of the use of sensory discrimination exercises on brain reorganization and brain plasticity is encouraged.

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Neuronal substrates of haptic shape encoding and matching: A functional magnetic resonance imaging study

Cited by 55 publications

References 73 publications

Are visual texture-selective areas recruited during haptic texture discrimination?

Are visual texture-selective areas recruited during haptic texture discrimination?

The effects of size changes on haptic object recognition

Frontoparietal involvement in passively guided shape and length discrimination: a comparison between subcortical stroke patients and healthy controls

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