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Multi-talker background and semantic priming effect.

Dekerle M, Boulenger V, Hoen M, Meunier F - Front Hum Neurosci (2014)

Bottom Line: The results showed a semantic priming effect only in the conditions where the number of SC voices was greater than the number of SI voices, suggesting that semantic priming depended on prime intelligibility and strategic processes.However, even if backgrounds were composed of 3 or 4 voices, reducing intelligibility, participants were able to recognize words from these backgrounds, although no semantic priming effect on the targets was observed.Based on the Effortfulness Hypothesis, we also suggest that when there is an increased difficulty in extracting target signals (caused by a relatively high number of voices in the background), more cognitive resources were allocated to formal processes (i.e., acoustic and phonological), leading to a decrease in available resources for deeper semantic processing of background words, therefore preventing semantic priming from occurring.

View Article: PubMed Central - PubMed

Affiliation: Laboratoire sur le Langage, le Cerveau et la Cognition, Centre National de la Recherche Scientifique, UMR 5304 Lyon, France ; University of Lyon Lyon, France.

ABSTRACT
The reported studies have aimed to investigate whether informational masking in a multi-talker background relies on semantic interference between the background and target using an adapted semantic priming paradigm. In 3 experiments, participants were required to perform a lexical decision task on a target item embedded in backgrounds composed of 1-4 voices. These voices were Semantically Consistent (SC) voices (i.e., pronouncing words sharing semantic features with the target) or Semantically Inconsistent (SI) voices (i.e., pronouncing words semantically unrelated to each other and to the target). In the first experiment, backgrounds consisted of 1 or 2 SC voices. One and 2 SI voices were added in Experiments 2 and 3, respectively. The results showed a semantic priming effect only in the conditions where the number of SC voices was greater than the number of SI voices, suggesting that semantic priming depended on prime intelligibility and strategic processes. However, even if backgrounds were composed of 3 or 4 voices, reducing intelligibility, participants were able to recognize words from these backgrounds, although no semantic priming effect on the targets was observed. Overall this finding suggests that informational masking can occur at a semantic level if intelligibility is sufficient. Based on the Effortfulness Hypothesis, we also suggest that when there is an increased difficulty in extracting target signals (caused by a relatively high number of voices in the background), more cognitive resources were allocated to formal processes (i.e., acoustic and phonological), leading to a decrease in available resources for deeper semantic processing of background words, therefore preventing semantic priming from occurring.

No MeSH data available.


Related in: MedlinePlus

Example of a spectrogram and a wave form of a 2SC/2SI condition stimulus. Red part corresponds to the occurrence of the target word.
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Figure 4: Example of a spectrogram and a wave form of a 2SC/2SI condition stimulus. Red part corresponds to the occurrence of the target word.

Mentions: The second SI voice (S4) was recorded by a French native female speaker (age = 23), using the same procedure as in previous experiments. S1, S2, and S3's auditory sequences were mixed with S4's. Targets used in Experiment 2 (recorded by TS2) were embedded in the backgrounds 2 s after their beginning start (see Figures 3, 4).


Multi-talker background and semantic priming effect.

Dekerle M, Boulenger V, Hoen M, Meunier F - Front Hum Neurosci (2014)

Example of a spectrogram and a wave form of a 2SC/2SI condition stimulus. Red part corresponds to the occurrence of the target word.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4215827&req=5

Figure 4: Example of a spectrogram and a wave form of a 2SC/2SI condition stimulus. Red part corresponds to the occurrence of the target word.
Mentions: The second SI voice (S4) was recorded by a French native female speaker (age = 23), using the same procedure as in previous experiments. S1, S2, and S3's auditory sequences were mixed with S4's. Targets used in Experiment 2 (recorded by TS2) were embedded in the backgrounds 2 s after their beginning start (see Figures 3, 4).

Bottom Line: The results showed a semantic priming effect only in the conditions where the number of SC voices was greater than the number of SI voices, suggesting that semantic priming depended on prime intelligibility and strategic processes.However, even if backgrounds were composed of 3 or 4 voices, reducing intelligibility, participants were able to recognize words from these backgrounds, although no semantic priming effect on the targets was observed.Based on the Effortfulness Hypothesis, we also suggest that when there is an increased difficulty in extracting target signals (caused by a relatively high number of voices in the background), more cognitive resources were allocated to formal processes (i.e., acoustic and phonological), leading to a decrease in available resources for deeper semantic processing of background words, therefore preventing semantic priming from occurring.

View Article: PubMed Central - PubMed

Affiliation: Laboratoire sur le Langage, le Cerveau et la Cognition, Centre National de la Recherche Scientifique, UMR 5304 Lyon, France ; University of Lyon Lyon, France.

ABSTRACT
The reported studies have aimed to investigate whether informational masking in a multi-talker background relies on semantic interference between the background and target using an adapted semantic priming paradigm. In 3 experiments, participants were required to perform a lexical decision task on a target item embedded in backgrounds composed of 1-4 voices. These voices were Semantically Consistent (SC) voices (i.e., pronouncing words sharing semantic features with the target) or Semantically Inconsistent (SI) voices (i.e., pronouncing words semantically unrelated to each other and to the target). In the first experiment, backgrounds consisted of 1 or 2 SC voices. One and 2 SI voices were added in Experiments 2 and 3, respectively. The results showed a semantic priming effect only in the conditions where the number of SC voices was greater than the number of SI voices, suggesting that semantic priming depended on prime intelligibility and strategic processes. However, even if backgrounds were composed of 3 or 4 voices, reducing intelligibility, participants were able to recognize words from these backgrounds, although no semantic priming effect on the targets was observed. Overall this finding suggests that informational masking can occur at a semantic level if intelligibility is sufficient. Based on the Effortfulness Hypothesis, we also suggest that when there is an increased difficulty in extracting target signals (caused by a relatively high number of voices in the background), more cognitive resources were allocated to formal processes (i.e., acoustic and phonological), leading to a decrease in available resources for deeper semantic processing of background words, therefore preventing semantic priming from occurring.

No MeSH data available.


Related in: MedlinePlus