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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

Grand average ERPs at Fz, FCz, Cz, CPz and Pz for different conditions.
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pone.0132679.g003: Grand average ERPs at Fz, FCz, Cz, CPz and Pz for different conditions.

Mentions: As shown in Fig 3, there were significant differences in the amplitudes of the N400 elicited by different types of relations, F (3, 42) = 18.75, ε = .80, p < .001, η2 = .57. Post hoc pair-wise comparison indicated that the N400 elicited by unrelated words was larger than hierarchically related words (p = .005), causally related words (p < .001), and associatively related words (p < .001). No other difference was found among different types of relations, ps>.10.


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)

Grand average ERPs at Fz, FCz, Cz, CPz and Pz for different conditions.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0132679.g003: Grand average ERPs at Fz, FCz, Cz, CPz and Pz for different conditions.
Mentions: As shown in Fig 3, there were significant differences in the amplitudes of the N400 elicited by different types of relations, F (3, 42) = 18.75, ε = .80, p < .001, η2 = .57. Post hoc pair-wise comparison indicated that the N400 elicited by unrelated words was larger than hierarchically related words (p = .005), causally related words (p < .001), and associatively related words (p < .001). No other difference was found among different types of relations, ps>.10.

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