NI Qi,JIA Chunhua.Cognitive Associations Between "Red Tongue" and "Heat Syndrome" Based on Event-Related Potentials Technology[J].Journal of Traditional Chinese Medicine,2025,66(17):1769-1776.
NI Qi,JIA Chunhua.Cognitive Associations Between "Red Tongue" and "Heat Syndrome" Based on Event-Related Potentials Technology[J].Journal of Traditional Chinese Medicine,2025,66(17):1769-1776.DOI: 10.13288/j.11-2166/r.2025.17.007.
Cognitive Associations Between "Red Tongue" and "Heat Syndrome" Based on Event-Related Potentials Technology
To explore the relationship between "red tongue" and "heat syndrome" in the field of cerebral neural mechanisms based on event-related potentials (ERPs) technology, so as to provide a method for the objective research of tongue diagnosis in traditional Chinese medicine (TCM).
Methods
2
This study recruited master's and doctoral students from Beijing University of Chinese Medicine as participants, and finally included the research data of 30 participants in the analysis. The participants wore electrode caps to collect ERP data, and a modified figure-word Stroop paradigm was adopted, in which the text-based TCM symptoms and signs of "heat", "cold", and "neutral" were matched and presented with figure-based tongue diagnosis images of "red tongue", forming three types of study stimuli, i.e. "red tongue diagnosis image + heat symptoms and signs", "red tongue diagnosis image + cold symptoms and signs", and "red tongue diagnosis image + neutral symptoms and signs". By recording and analyzing the behavioral data including key-press accuracy rate and key-press reaction time and electroencephalographic data including observation on waveforms of specific electroencephalographic components and statistics on differences in their amplitudes among different stimulus types and different brain regions of the participants when different types of stimuli are presented, this study explored whether there are cognitive associations or cognitive conflicts between "red tongue" and TCM symptoms and signs of "heat", "cold", and "neutral".
Results
2
For the stimulus type of "red tongue diagnosis image + heat symptoms and signs", the key-press reaction time was shorter (main effect statistics:
P
<0.001,
F
(1.333, 38.663)
= 13.24,
η
² = 0.313) and the key-press accuracy rate was higher (main effect statistics:
P
= 0.046,
F
(1.564, 45.367)
= 3.593,
η
² = 0.11) compared with other stimulus types. All stimulus types induced relatively obvious electroencephalographic components, including a positive wave component (P600) at 600~650 ms, a late negative component (LNC) at 900~950 ms, and a weak negative wave component (N400) at 400~450 ms. The P600 showed a right lateralization trend (main effect of brain regions:
P
= 0.003,
F
(2, 58)
= 6.456,
η
² = 0.182), while the LNC showed a left lateralization trend (main effect of brain regions:
P
<0.001,
F
(2, 58)
= 13.304,
η
² = 0.314).
Conclusion
2
There is a weak cognitive association between "red tongue" and "heat syndrome", while a strong cognitive conflict exists between "red tongue" and "cold syndrome", and the inhibitory control process of brain is different between the left and right hemispheres.
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