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Subliminal semantic priming in speech.

Daltrozzo J, Signoret C, Tillmann B, Perrin F - PLoS ONE (2011)

Bottom Line: Prime awareness was manipulated by a reduction of sound intensity level.Uncategorized prime words (according to a post-test) were followed by semantically related, unrelated, or repeated target words (presented without intensity reduction) and participants performed a lexical decision task (LDT).Participants with slower reaction times in the LDT showed semantic priming (faster reaction times for semantically related compared to unrelated targets) and negative repetition priming (slower reaction times for repeated compared to semantically related targets).

View Article: PubMed Central - PubMed

Affiliation: CNRS, UMR5292, Lyon Neuroscience Research Center, Auditory Cognition and Psychoacoustics Team, Lyon, France. jdaltrozzo@olfac.univ-lyon1.fr

ABSTRACT
Numerous studies have reported subliminal repetition and semantic priming in the visual modality. We transferred this paradigm to the auditory modality. Prime awareness was manipulated by a reduction of sound intensity level. Uncategorized prime words (according to a post-test) were followed by semantically related, unrelated, or repeated target words (presented without intensity reduction) and participants performed a lexical decision task (LDT). Participants with slower reaction times in the LDT showed semantic priming (faster reaction times for semantically related compared to unrelated targets) and negative repetition priming (slower reaction times for repeated compared to semantically related targets). This is the first report of semantic priming in the auditory modality without conscious categorization of the prime.

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Related in: MedlinePlus

Regression line of the priming between related and unrelated pairs.Regression line of the priming between related and unrelated pairs (vertical axis: correct reaction time difference between the two conditions in milliseconds) as a function of the prime awareness sensitivity d′c (see Methods), on the horizontal axis.
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pone-0020273-g003: Regression line of the priming between related and unrelated pairs.Regression line of the priming between related and unrelated pairs (vertical axis: correct reaction time difference between the two conditions in milliseconds) as a function of the prime awareness sensitivity d′c (see Methods), on the horizontal axis.

Mentions: As categorization sensitivity for the entire group was slightly greater than zero (d′C = .10±04, t(22) = 2.54, p = .02), priming at d′C = 0 was estimated through regression analyzes [41]. The regression line of priming effects between related and unrelated pairs was y = −120x+29 with a y-intercept that was significantly above zero [t(22) = 2.77, p = .010] (Figure 3). According to this regression, at d′C = 0, participants would respond 29 ms faster to related pairs compared to unrelated pairs and this RT difference would be significant (p = .010). The regression line of priming effects between related and repeated pairs was y = −80.2x+31.0 with a y-intercept that was significantly above zero [t(22) = 2.70, p = .012] (Figure 4). According to this regression, at d′C = 0, participants would respond 31 ms faster to related pairs compared to repeated pairs and this RT difference would be significant (p = .012). As these estimated priming effects at d′C = 0 (corresponding to the y-intercepts) differed from zero, these regression suggested semantic and negative repetition priming when participants were not able to categorize the stimuli.


Subliminal semantic priming in speech.

Daltrozzo J, Signoret C, Tillmann B, Perrin F - PLoS ONE (2011)

Regression line of the priming between related and unrelated pairs.Regression line of the priming between related and unrelated pairs (vertical axis: correct reaction time difference between the two conditions in milliseconds) as a function of the prime awareness sensitivity d′c (see Methods), on the horizontal axis.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3105000&req=5

pone-0020273-g003: Regression line of the priming between related and unrelated pairs.Regression line of the priming between related and unrelated pairs (vertical axis: correct reaction time difference between the two conditions in milliseconds) as a function of the prime awareness sensitivity d′c (see Methods), on the horizontal axis.
Mentions: As categorization sensitivity for the entire group was slightly greater than zero (d′C = .10±04, t(22) = 2.54, p = .02), priming at d′C = 0 was estimated through regression analyzes [41]. The regression line of priming effects between related and unrelated pairs was y = −120x+29 with a y-intercept that was significantly above zero [t(22) = 2.77, p = .010] (Figure 3). According to this regression, at d′C = 0, participants would respond 29 ms faster to related pairs compared to unrelated pairs and this RT difference would be significant (p = .010). The regression line of priming effects between related and repeated pairs was y = −80.2x+31.0 with a y-intercept that was significantly above zero [t(22) = 2.70, p = .012] (Figure 4). According to this regression, at d′C = 0, participants would respond 31 ms faster to related pairs compared to repeated pairs and this RT difference would be significant (p = .012). As these estimated priming effects at d′C = 0 (corresponding to the y-intercepts) differed from zero, these regression suggested semantic and negative repetition priming when participants were not able to categorize the stimuli.

Bottom Line: Prime awareness was manipulated by a reduction of sound intensity level.Uncategorized prime words (according to a post-test) were followed by semantically related, unrelated, or repeated target words (presented without intensity reduction) and participants performed a lexical decision task (LDT).Participants with slower reaction times in the LDT showed semantic priming (faster reaction times for semantically related compared to unrelated targets) and negative repetition priming (slower reaction times for repeated compared to semantically related targets).

View Article: PubMed Central - PubMed

Affiliation: CNRS, UMR5292, Lyon Neuroscience Research Center, Auditory Cognition and Psychoacoustics Team, Lyon, France. jdaltrozzo@olfac.univ-lyon1.fr

ABSTRACT
Numerous studies have reported subliminal repetition and semantic priming in the visual modality. We transferred this paradigm to the auditory modality. Prime awareness was manipulated by a reduction of sound intensity level. Uncategorized prime words (according to a post-test) were followed by semantically related, unrelated, or repeated target words (presented without intensity reduction) and participants performed a lexical decision task (LDT). Participants with slower reaction times in the LDT showed semantic priming (faster reaction times for semantically related compared to unrelated targets) and negative repetition priming (slower reaction times for repeated compared to semantically related targets). This is the first report of semantic priming in the auditory modality without conscious categorization of the prime.

Show MeSH
Related in: MedlinePlus