Exact(9)
It also accounts for the findings from neuroimaging studies that word meaning relates to middle and inferior temporal activation, and that this activation can reflect specific semantic types and category specificity (Chao, Haxby, & Martin, 1999; Moscoso Del Prado Martin et al., 2006; Noppeney & Price, 2002; Pulvermüller & Hauk, 2006).
These findings suggest that ventral stream regions that show category specificity are modulated by the perceived size and distance of visual stimuli.
This is because intermediate-complexity fragments tend to best balance category specificity against frequency of occurrence [5], [8], [9], [10], [11].
The notion of category specificity in the organization of object knowledge emerged in the 1980s, when Warrington and colleagues first reported on patients with selective impairment for one semantic category compared to other semantic categories [1] [3].
Analysis of call category specificity revealed that many neurons (RS and FS) responded to more than one of the major call categories.
An explanation of semantic topography and category specificity is possible in terms of correlation learning mechanisms in association with corticocortical connectivity.
Similar(51)
Here, we followed up that observation in a larger sample, using more sensitive tasks, and examining the category-specificity of this effect.
In these patient studies, category-specificity at this stage could however not be established as a similar early fusiform N110 component was found in response to the presentation of geometrical shapes [71].
In addition, category-specificity has also been claimed for an earlier component that peaks around 100 120-ms after the onset of a visual stimulus in posterior sensors in EEG or MEG recordings, labeled the 'P100 120-ms00' component respectively, or of even eafterr actheity (30–110-ms ponsettimulus).
This is consistent with a degree of category-specificity of these ventral stream regions (Pulvermüller et al. 2011).
Therefore, the mechanistic model provides an account of semantic category-specificity that is manifest in focal cortical activation and, critically, in the time course of semantic brain activation distinguishing between word kinds with different referential meaning.
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