Short-term enhancement of cognitive functions and music: A three-channel model

Gupta, Ashish; Bhushan, Braj; Behera, Laxmidhar · 2018 · Crossref

DOI: 10.1038/s41598-018-33618-1

archive: archived pipeline: cataloged verified

Get this paper ↗ (DOI — opens at the source; we link to it, we don't host it)

Summary

This study investigates the neural mechanisms underlying the short-term enhancement of cognitive functions following exposure to music. While previous research established that music listening improves cognitive performance, often attributed to the "Mozart effect" or arousal-mood hypotheses, the direct neural pathways and network dynamics responsible for these improvements remained unclear. The authors hypothesized that music acts as an external stimulus that directly alters brain network dynamics, leading to enhanced cognitive efficiency. To test this, the study focused on two neuropsychological constructs: intelligence and sustained attention, utilizing Electroencephalography (EEG) to analyze changes in alpha band power and functional connectivity during the resting state. The experimental design involved exposing participants to Indian classical music, specifically Raga Darbari played on the flute, to ensure cultural salience. The researchers quantified functional connectivity using three distinct metrics: phase coherence, phase delay, and phase slope index (PSI). These metrics were chosen to robustly characterize information flow and synchronization between cortical regions, independent of amplitude artifacts. The analysis focused on the resting state EEG patterns before and after music exposure, with particular attention to long-distance connections between frontal, parietal, occipital, and temporal lobes, as well as local power changes in the prefrontal and occipital cortices. The results demonstrated significant alterations in brain network dynamics post-exposure. Phase coherence analysis revealed a significant reduction in coherence across 27 long-distance connections, particularly between frontal-parietal and parietal-occipital regions, indicating reduced information flow. Similarly, phase delay analysis showed a significant increase in delay across 104 connections, and PSI analysis indicated a reduction in effective connectivity across 66 connections. In all three analyses, long-distance connections (>12 cm) were affected more significantly than short-distance ones, with pronounced effects in the left hemisphere. Additionally, alpha power analysis showed significant increases in the prefrontal cortex (Fp2 electrode) and occipital cortex (O1, O2, Oz electrodes) after music exposure. Subjective assessments confirmed that the music induced a moderate level of pleasantness in participants. Based on these findings, the authors propose a three-channel neuro-cognitive model to explain music-induced cognitive enhancement. The model posits that music improves cognitive function through: (1) enhanced global brain efficiency via the reduction of unnecessary long-distance information flow, aligning with the Neural Efficiency Hypothesis of Intelligence; (2) enhanced local neural efficiency in the prefrontal lobe, evidenced by increased alpha power; and (3) increased sustained attention. The study concludes that music directly influences brain networks by optimizing connectivity and reducing redundant communication, thereby conserving neural resources for efficient cognitive processing. This provides a mechanistic explanation for the short-term cognitive benefits of music, moving beyond indirect arousal-mood explanations to direct neural network modulation.

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed.

Summary generated by qwen3.6-27b-nvidia on 2026-08-10; verification: verified.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• music audio mood