The role of the posterior parietal cortex in human object recognition: a functional magnetic resonance imaging study

Sugio, Takeshi; Inui, Tomoyuki; Matsuo, Keizo; Matsuzawa, Masako; Glover, Gary H.; Nakai, Toshiharu

doi:10.1016/s0304-3940(99)00788-0

Cited by 49 publications

(39 citation statements)

References 10 publications

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“…We draw this inference on the basis of converging evidence. First, the VLPFC bilaterally is one of the most reliably activated regions during the categorization of MI relative to LI objects in the present study, as well as in related neuroimaging research that compared pictures of objects degraded by masking, adding noise, or viewing from unusual angles (Bar et al, 2001;Heekeren et al, 2004;Kosslyn et al, 1994;Kosslyn et al, 1997;Sugio et al, 1999).…”

Section: Vlpfc-ips Regions For Top-down Controlsupporting

confidence: 50%

“…In the right hemisphere, this region has been implicated in objectoriented spatial tasks, including categorizing objects from unusual views (i.e., another MI image) Sugio et al, 1999;Turnbull et al, 1997), object mental rotation (Kosslyn et al, 1998), object-directed action (James et al, 2002), and binding visual object features (Friedman-Hill et al, 1995). After all, our MI images are composed of spatially disparate elements that may need to be bound together to create a spatially coherent image that can be matched to stored object representations.…”

Section: Vlpfc-ips Regions For Top-down Controlmentioning

confidence: 99%

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Neuroimaging evidence for object model verification theory: Role of prefrontal control in visual object categorization

2007

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Although the visual system rapidly categorizes objects seen under optimal viewing conditions, the categorization of objects seen under impoverished viewing conditions not only requires more time but also may depend more on top-down processing, as hypothesized by object model verification theory. Two studies, one with functional magnetic resonance imaging (fMRI) and one behavioral with the same stimuli, tested this hypothesis. FMRI data were acquired while people categorized more impoverished (MI) and less impoverished (LI) line drawings of objects. FMRI results revealed stronger activation during the MI than LI condition in brain regions involved in top-down control (inferior and medial prefrontal cortex, intraparietal sulcus), and in posterior, object-sensitive, brain regions (ventral and dorsal occipitotemporal, and occipitoparietal cortex). The behavioral study indicated that taxing visuospatial working memory, a key component of top-down control processes during visual tasks, interferes more with the categorization of MI stimuli (but not LI stimuli) than does taxing verbal working memory. Together, these findings provide evidence for object model verification theory and implicate greater prefrontal cortex involvement in top-down control of posterior visual processes during the categorization of more impoverished images of objects.

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Section: Vlpfc-ips Regions For Top-down Controlsupporting

confidence: 50%

Section: Vlpfc-ips Regions For Top-down Controlmentioning

confidence: 99%

Neuroimaging evidence for object model verification theory: Role of prefrontal control in visual object categorization

2007

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“…bottom-up appears to be of significant influence on premotor inmodulations. volvement, as indicated by a number of imaging studies It has to be considered that the design of Experiment 1 [1,32,33,63]. In contrast, stimuli that induced premotor suffered from the fact that the control condition also activation in the present studies did not have any obvious required a certain amount of sequential processing in the pragmatic meaning.…”

Section: Discussionmentioning

confidence: 80%

Dynamic patterns make the premotor cortex interested in objects: influence of stimulus and task revealed by fMRI

Schubotz

Cramon

2002

Cognitive Brain Research

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Research in monkey and man indicates that the ventrolateral premotor cortex (PMv) underlies not only the preparation of manual movements, but also the perceptual representation of pragmatic object properties. However, visual stimuli without any pragmatic meaning were recently found to elicit selective PMv responses if they were subjected to a perceivable pattern of change. We used functional magnetic resonance imaging (fMRI) to investigate if perceptual representations in the PMv might apply not only to pragmatic, but also to dynamic stimulus properties. To this end, a sequential figure matching task that required the processing of dynamic features was contrasted with a non-figure control task (Experiment 1) and an individual figure matching task (Experiment 2). In order to control for potential influences of stimulus properties that might be associated with pragmatic attributes, different types of abstract visual stimuli were employed. The experiments yielded two major findings: if their dynamic properties are attended, then abstract 2D visual figures are sufficient to trigger activation within premotor areas involved in hand-object interaction. Moreover, these premotor activations are independent from stimulus properties that might relate to pragmatic features. The results imply that the PMv is engaged in the processing of stimuli that are usually or actually embedded within either a pragmatic or a dynamic context. 

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“…They found activity in premotor structures although the task required no concurrent motor output. Sugio et al (1999) detected activity in medial and lateral BA 6 when asking subjects to identify objects presented in noncanonical orientations.…”

Section: Functional Equivalence Of Overt and Covert Object Manipulationmentioning

confidence: 95%

Evidence for Premotor Cortex Activity during Dynamic Visuospatial Imagery from Single-Trial Functional Magnetic Resonance Imaging and Event-Related Slow Cortical Potentials

et al. 2001

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A strong correspondence has been repeatedly observed between actually performed and mentally imagined object rotation. This suggests an overlap in the brain regions involved in these processes. Functional neuroimaging studies have consistently revealed parietal and occipital cortex activity during dynamic visuospatial imagery. However, results concerning the involvement of higher-order cortical motor areas have been less consistent. We investigated if and when premotor structures are active during processing of a three-dimensional cube comparison task that requires dynamic visuospatial imagery. In order to achieve a good temporal and spatial resolution, single-trial functional magnetic resonance imaging (fMRI) and scalp-recorded event-related slow cortical potentials (SCPs) were recorded from the same subjects in two separate measurement sessions. In order to reduce inter-subject variability in brain activity due to individual differences, only male subjects (n ‫؍‬ 13) with high task-specific ability were investigated. Functional MRI revealed consistent bilateral activity in the occipital (Brodmann area BA18/19) and parietal cortex (BA7), in lateral and medial premotor areas (BA6), the dorsolateral prefrontal cortex (BA9), and the anterior insular cortex. The time-course of SCPs indicated that task-related activity in these areas commenced approximately 550 -650 ms after stimulus presentation and persisted until task completion. These results provide strong and consistent evidence that the human premotor cortex is involved in dynamic visuospatial imagery.

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The role of the posterior parietal cortex in human object recognition: a functional magnetic resonance imaging study

Cited by 49 publications

References 10 publications

Neuroimaging evidence for object model verification theory: Role of prefrontal control in visual object categorization

Neuroimaging evidence for object model verification theory: Role of prefrontal control in visual object categorization

Dynamic patterns make the premotor cortex interested in objects: influence of stimulus and task revealed by fMRI

Evidence for Premotor Cortex Activity during Dynamic Visuospatial Imagery from Single-Trial Functional Magnetic Resonance Imaging and Event-Related Slow Cortical Potentials

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