Short Communication: Dissociating the representation of action- and sound-related concepts in middle temporal cortex  

Oleh:

Kiefer, Markus ; Trumpp, Natalie ; Herrnberger, Bärbel ; Sim, Eun-Jin ; Hoenig, Klaus ; Pulvermüller, Friedemann

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 122 no. 2 (2012), page 120-125.
Topik: Embodied cognition; Action-related concepts; Sound-related concepts; Language; Middle temporal gyrus; fMRI
Fulltext: 122_02_Kiefer.pdf (372.27KB)

Isi artikel

Modality-specific models of conceptual memory propose close links between concepts and the sensorymotor systems. Neuroimaging studies found, in different subject groups, that action-related and soundrelated concepts activated different parts of posterior middle temporal gyrus (pMTG), suggesting a modality-specific representation of conceptual features. However, as these different parts of pMTG are close to each other, it is possible that the observed anatomical difference is merely related to interindividual variability. In the present functional magnetic resonance imaging study, we now investigated within the same participant group a possible conceptual feature-specific organization in pMTG. Participants performed lexical decisions on sound-related (e.g., telephone) and action-related (hammer) words. Sound words elicited higher activity in anterior pMTG adjacent to auditory association cortex, but actionrelated words did so in posterior pMTG close to motion sensitive areas. These results confirm distinct conceptual representations of sound and action in pMTG, just adjacent to the respective modality-specific cortices.

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