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The Processing of Causal and Hierarchical Relations in Semantic Memory as Revealed by N400 and Frontal Negativity.

Liang X, Chen Q, Lei Y, Li H - PLoS ONE (2015)

Bottom Line: The ERP data showed that the N400 amplitude (200-500 ms) elicited by unrelated related words was more negative than all related words.Furthermore, the late frontal distributed negativity (500-700 ms) elicited by causally related words was smaller than hierarchically related words, but not for general associated words.These results suggested the processing of causal relations and hierarchical relations in semantic memory recruited different degrees of cognitive resources, especially for role binding.

View Article: PubMed Central - PubMed

Affiliation: Research Centre for Brain Function and Psychological Science, Shenzhen University, Shenzhen, China.

ABSTRACT
Most current studies investigating semantic memory have focused on associative (ring-emerald) or taxonomic relations (bird-sparrow). Little is known about the question of how causal relations (virus-epidemic) are stored and accessed in semantic memory. The goal of this study was to examine the processing of causally related, general associatively related and hierarchically related word pairs when participants were required to evaluate whether pairs of words were related in any way. The ERP data showed that the N400 amplitude (200-500 ms) elicited by unrelated related words was more negative than all related words. Furthermore, the late frontal distributed negativity (500-700 ms) elicited by causally related words was smaller than hierarchically related words, but not for general associated words. These results suggested the processing of causal relations and hierarchical relations in semantic memory recruited different degrees of cognitive resources, especially for role binding.

No MeSH data available.


Related in: MedlinePlus

Difference wave and topographical maps for N400 amplitude measured by subtracting the ERP to hierarchically related words (left) from the ERP to unrelated words, and by doing the same with the ERP to causally related words (middle), and associatively related words (right).
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pone.0132679.g004: Difference wave and topographical maps for N400 amplitude measured by subtracting the ERP to hierarchically related words (left) from the ERP to unrelated words, and by doing the same with the ERP to causally related words (middle), and associatively related words (right).

Mentions: As shown in Figs 4 and 5, the N400 amplitude elicited by unrelated words was larger than all related words, which was maximally different at central-parietal sites for all related conditions, whereas the difference on the frontal negativity elicited by causally related condition was mainly found at frontal sites.


The Processing of Causal and Hierarchical Relations in Semantic Memory as Revealed by N400 and Frontal Negativity.

Liang X, Chen Q, Lei Y, Li H - PLoS ONE (2015)

Difference wave and topographical maps for N400 amplitude measured by subtracting the ERP to hierarchically related words (left) from the ERP to unrelated words, and by doing the same with the ERP to causally related words (middle), and associatively related words (right).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493067&req=5

pone.0132679.g004: Difference wave and topographical maps for N400 amplitude measured by subtracting the ERP to hierarchically related words (left) from the ERP to unrelated words, and by doing the same with the ERP to causally related words (middle), and associatively related words (right).
Mentions: As shown in Figs 4 and 5, the N400 amplitude elicited by unrelated words was larger than all related words, which was maximally different at central-parietal sites for all related conditions, whereas the difference on the frontal negativity elicited by causally related condition was mainly found at frontal sites.

Bottom Line: The ERP data showed that the N400 amplitude (200-500 ms) elicited by unrelated related words was more negative than all related words.Furthermore, the late frontal distributed negativity (500-700 ms) elicited by causally related words was smaller than hierarchically related words, but not for general associated words.These results suggested the processing of causal relations and hierarchical relations in semantic memory recruited different degrees of cognitive resources, especially for role binding.

View Article: PubMed Central - PubMed

Affiliation: Research Centre for Brain Function and Psychological Science, Shenzhen University, Shenzhen, China.

ABSTRACT
Most current studies investigating semantic memory have focused on associative (ring-emerald) or taxonomic relations (bird-sparrow). Little is known about the question of how causal relations (virus-epidemic) are stored and accessed in semantic memory. The goal of this study was to examine the processing of causally related, general associatively related and hierarchically related word pairs when participants were required to evaluate whether pairs of words were related in any way. The ERP data showed that the N400 amplitude (200-500 ms) elicited by unrelated related words was more negative than all related words. Furthermore, the late frontal distributed negativity (500-700 ms) elicited by causally related words was smaller than hierarchically related words, but not for general associated words. These results suggested the processing of causal relations and hierarchical relations in semantic memory recruited different degrees of cognitive resources, especially for role binding.

No MeSH data available.


Related in: MedlinePlus