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Neuromagnetic brain activities associated with perceptual categorization and sound-content incongruency: a comparison between monosyllabic words and pitch names.

Tsai CG, Chen CC, Wen YC, Chou TL - Front Hum Neurosci (2015)

Bottom Line: Congruency effects of musical stimuli revealed that pitch categorization and semantic processing of pitch information were associated with P2m and N400m, respectively.For verbal stimuli, P2m and N400m did not show any congruency effect.In both the pitch-semantic task and the voice-semantic task, we found that incongruent stimuli evoked stronger slow waves with the latency of 500-600 ms than congruent stimuli.

View Article: PubMed Central - PubMed

Affiliation: Graduate Institute of Musicology, National Taiwan University Taipei, Taiwan ; Neurobiology and Cognitive Science Center, National Taiwan University Taipei, Taiwan.

ABSTRACT
In human cultures, the perceptual categorization of musical pitches relies on pitch-naming systems. A sung pitch name concurrently holds the information of fundamental frequency and pitch name. These two aspects may be either congruent or incongruent with regard to pitch categorization. The present study aimed to compare the neuromagnetic responses to musical and verbal stimuli for congruency judgments, for example a congruent pair for the pitch C4 sung with the pitch name do in a C-major context (the pitch-semantic task) or for the meaning of a word to match the speaker's identity (the voice-semantic task). Both the behavioral data and neuromagnetic data showed that congruency detection of the speaker's identity and word meaning was slower than that of the pitch and pitch name. Congruency effects of musical stimuli revealed that pitch categorization and semantic processing of pitch information were associated with P2m and N400m, respectively. For verbal stimuli, P2m and N400m did not show any congruency effect. In both the pitch-semantic task and the voice-semantic task, we found that incongruent stimuli evoked stronger slow waves with the latency of 500-600 ms than congruent stimuli. These findings shed new light on the neural mechanisms underlying pitch-naming processes.

No MeSH data available.


Related in: MedlinePlus

The average topographies for P2m, N400m, and SWm for two conditions of the pitch-semantic task and the grand-average magnetoencephalography (MEG) waveforms in ROIs.
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Figure 3: The average topographies for P2m, N400m, and SWm for two conditions of the pitch-semantic task and the grand-average magnetoencephalography (MEG) waveforms in ROIs.

Mentions: Figure 3 shows the grand average MEG waveform components at 210, 380, and 550 ms for each condition and ROIs. Both the incongruent musical stimuli and incongruent verbal stimuli evoked significant N400m and SWm, whereas congruent stimuli of sung pitch name evoked significant P2m. The mean amplitudes of P2m, N400m, and SWm are presented in Figure 4. The results of ANOVA for peak amplitude are summarized as follows (only significant effects were reported).


Neuromagnetic brain activities associated with perceptual categorization and sound-content incongruency: a comparison between monosyllabic words and pitch names.

Tsai CG, Chen CC, Wen YC, Chou TL - Front Hum Neurosci (2015)

The average topographies for P2m, N400m, and SWm for two conditions of the pitch-semantic task and the grand-average magnetoencephalography (MEG) waveforms in ROIs.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4538295&req=5

Figure 3: The average topographies for P2m, N400m, and SWm for two conditions of the pitch-semantic task and the grand-average magnetoencephalography (MEG) waveforms in ROIs.
Mentions: Figure 3 shows the grand average MEG waveform components at 210, 380, and 550 ms for each condition and ROIs. Both the incongruent musical stimuli and incongruent verbal stimuli evoked significant N400m and SWm, whereas congruent stimuli of sung pitch name evoked significant P2m. The mean amplitudes of P2m, N400m, and SWm are presented in Figure 4. The results of ANOVA for peak amplitude are summarized as follows (only significant effects were reported).

Bottom Line: Congruency effects of musical stimuli revealed that pitch categorization and semantic processing of pitch information were associated with P2m and N400m, respectively.For verbal stimuli, P2m and N400m did not show any congruency effect.In both the pitch-semantic task and the voice-semantic task, we found that incongruent stimuli evoked stronger slow waves with the latency of 500-600 ms than congruent stimuli.

View Article: PubMed Central - PubMed

Affiliation: Graduate Institute of Musicology, National Taiwan University Taipei, Taiwan ; Neurobiology and Cognitive Science Center, National Taiwan University Taipei, Taiwan.

ABSTRACT
In human cultures, the perceptual categorization of musical pitches relies on pitch-naming systems. A sung pitch name concurrently holds the information of fundamental frequency and pitch name. These two aspects may be either congruent or incongruent with regard to pitch categorization. The present study aimed to compare the neuromagnetic responses to musical and verbal stimuli for congruency judgments, for example a congruent pair for the pitch C4 sung with the pitch name do in a C-major context (the pitch-semantic task) or for the meaning of a word to match the speaker's identity (the voice-semantic task). Both the behavioral data and neuromagnetic data showed that congruency detection of the speaker's identity and word meaning was slower than that of the pitch and pitch name. Congruency effects of musical stimuli revealed that pitch categorization and semantic processing of pitch information were associated with P2m and N400m, respectively. For verbal stimuli, P2m and N400m did not show any congruency effect. In both the pitch-semantic task and the voice-semantic task, we found that incongruent stimuli evoked stronger slow waves with the latency of 500-600 ms than congruent stimuli. These findings shed new light on the neural mechanisms underlying pitch-naming processes.

No MeSH data available.


Related in: MedlinePlus