Object-Specific Semantic Coding in Human Perirhinal Cortex

Clarke, Alex; Tyler, Lorraine K.

doi:10.1523/jneurosci.2828-13.2014

Cited by 224 publications

(282 citation statements)

References 63 publications

Supporting

Mentioning

234

Contrasting

Order By: Relevance

“…While a similar posterior-to-anterior gradient of abstraction -from physical to perceptual to conceptual information coding-has been previously reported in the domain of object recognition (Peelen and Caramazza, 2012;Devereux et al, 2013;Carlson et al, 2014;Clarke and Tyler, 2014), to our knowledge no study has previously investigated at the same time physical, perceptual and conceptual dimensions of word meaning. The presence of a semantic gradient along the occipito-temporal axis was first suggested by clinical data: patients with vascular damage in the territory of the posterior cerebral artery present fine-grained categorical deficits (e.g.…”

Section: Representational Shift Along the Ventral Streamsupporting

confidence: 72%

See 1 more Smart Citation

Word meaning in the ventral visual path: a perceptual to conceptual gradient of semantic coding

et al. 2016

View full text Add to dashboard Cite

valentinaborghesani@gmail.comThe authors declare no competing financial interests. ABSTRACTThe meaning of words referring to concrete items is thought of as a multidimensional representation that includes both perceptual (e.g., average size, prototypical color) and conceptual (e.g., taxonomic class) dimensions. Are these different dimensions coded in different brain regions? In healthy human subjects, we tested the presence of a mapping between the implied real object size (a perceptual dimension) and the taxonomic categories at different levels of specificity (conceptual dimensions) of a series of words, and the patterns of brain activity recorded with functional magnetic resonance imaging in six areas along the ventral occipito-temporal cortical path. Combining multivariate pattern classification and representational similarity analysis, we found that the real object size implied by a word appears to be primarily encoded in early visual regions, while the taxonomic category and subcategorical cluster in more anterior temporal regions. This anteroposterior gradient of information content indicates that different areas along the ventral stream encode complementary dimensions of the semantic space.

show abstract

Section: Representational Shift Along the Ventral Streamsupporting

confidence: 72%

“…size) while testing for the correlation between the other dimension (e.g. category) and the neural similarity in a given region (Clarke and Tyler, 2014).…”

Section: Multivariate Pattern Analysesmentioning

confidence: 99%

Word meaning in the ventral visual path: a perceptual to conceptual gradient of semantic coding

et al. 2016

View full text Add to dashboard Cite

show abstract

“…There are increasing meaning levels along the hierarchy. This aligns with the neurophysiological and imaging findings in a progressive-and-bidirectional view of meaning representation (e.g., Clarke & Tyler, 2014;Gainotti, Ciaraffa, Silveri, & Marra, 2009;Poldrack et al, 1999). This view recognizes a feed-forward projection of signals from primary sensory cortexes to higher-level integration regions for information processing, but for conceptual activities (e.g., NsLLT, Level 3) to take place, there must be abundant top-down projections (see Klemen & Chambers, 2012).…”

Section: The Neuro-semantic Language Learning Theorysupporting

confidence: 74%

Using Neuroeducation as a Model to Evaluate the Effect of Imagery on Chinese Character Writing

Lam¹,

Arwood²

2017

SUET

View full text Add to dashboard Cite

Using imagery as a strategy for language learning may be helpful to encode linguistic forms into conceptual networks for long-term memory. Based on Arwood's neuroeducation model of language learning, this research evaluated the effect of imagery in Chinese character writing by English-speaking adolescent students. After comparing imagery effects under three instructional conditions (i.e., English translation, pictorial presentation, and verbal-contextual interpretation), the results showed that the use of imagery predicted significantly better writing results in the immediate and one-week writing tests, but not in the four-week writing test. Cognitive analyses found that imagery was commonly used as a mediational strategy in the pictorial and verbal-contextual methods in the early learning phases. The pictorial method mainly elicited perceptual visual patterns which failed to support sustained memory. For a better character encoding and retrieval, images had to be generated associated with sufficient and relevant contextual information.

show abstract

“…For written words, semantic similarity between concrete animate entities is reflected by the cosine similarity between fMRI response patterns in perirhinal cortex (Bruffaerts et al, 2013b). The semantic similarity effect in perirhinal cortex was subsequently confirmed by Clarke and Tyler (2014) during overt naming of pictures of animate and inanimate items. A third research group independently found crossmodal semantic effects for written words and pictures in left ventral temporal cortex, encompassing left perirhinal cortex among other areas (Fairhall and Caramazza, 2013).…”

Section: Introductionmentioning

confidence: 91%

“…Left perirhinal cortex is one of the regions that has come out of a number of MVPA studies of this kind in a relatively consistent manner (Bruffaerts et al, 2013b;Fairhall and Caramazza, 2013;Clarke and Tyler, 2014;Mur, 2014). For written words, semantic similarity between concrete animate entities is reflected by the cosine similarity between fMRI response patterns in perirhinal cortex (Bruffaerts et al, 2013b).…”

Section: Introductionmentioning

confidence: 99%

Left perirhinal cortex codes for similarity in meaning between written words: Comparison with auditory word input

et al. 2015

View full text Add to dashboard Cite

This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Neuropsychologia following peer review. The definitive publisher-authenticated version (Liuzzi A.G., Bruffaerts R., Dupont P., Adamczuk K., Peeters R., De Deyne S., Storms G., Vandenberghe R. AbstractLeft perirhinal cortex has been previously implicated in associative coding. According to a recent experiment, the similarity of perirhinal fMRI response patterns to written concrete words is higher for words which are more similar in their meaning. If left perirhinal cortex functions as an amodal semantic hub, one would predict that this semantic similarity effect would extend to the spoken modality. We conducted an event-related fMRI experiment and evaluated whether a same semantic similarity effect could be obtained for spoken as for written words. Twenty healthy subjects performed a property verification task in either the written or the spoken modality. Words corresponded to concrete animate entities for which extensive feature generation was available from more than 1000 subjects. From these feature generation data, a concept-feature matrix was derived which formed the basis of a cosine similarity matrix between the entities reflecting their similarity in meaning (called the "semantic cossimilarity matrix"). Independently, we calculated a cosine similarity matrix between the left perirhinal fMRI activity patterns evoked by the words (called the "fMRI cossimilarity matrix"). Next, the similarity was determined between the semantic cossimilarity matrix and the fMRI cossimilarity matrix. This was done for written and spoken words pooled, for written words only, for spoken words only, as well as for crossmodal pairs. Only for written words did the fMRI cossimilarity matrix correlate with the semantic cossimilarity matrix. Contrary to our prediction, we did not find any such effect for auditory word input nor did we find cross-modal effects in perirhinal cortex between written and auditory words. Our findings situate the contribution of left perirhinal cortex to word processing at the top of the visual processing pathway, rather than at an amodal stage where visual and auditory word processing pathways have already converged.

show abstract

Object-Specific Semantic Coding in Human Perirhinal Cortex

Cited by 224 publications

References 63 publications

Word meaning in the ventral visual path: a perceptual to conceptual gradient of semantic coding

Word meaning in the ventral visual path: a perceptual to conceptual gradient of semantic coding

Using Neuroeducation as a Model to Evaluate the Effect of Imagery on Chinese Character Writing

Left perirhinal cortex codes for similarity in meaning between written words: Comparison with auditory word input

Contact Info

Product

Resources

About