Summary: A new study shows that musically trained individuals have an easier time focusing on the right sounds in noisy environments. By measuring brain activity during tasks requiring attention to specific melodies, researchers found stronger signals linked to conscious attention and weaker signals tied to automatic distraction in musical participants.
This indicates that music training may enhance top-down attention while reducing vulnerability to bottom-up distraction. The results support the idea that music could be applied as a tool to strengthen cognitive control and attention in daily life, though causality still needs to be proven.
Musical people find it easier to focus their attention on the right sounds in noisy environments.
This is shown in a new study from Karolinska Institutet published in the journal Science Advances.
The results suggest that music training can be used to sharpen attention and cognition.
Being able to focus on a conversation in a room full of noise is a complex task for the brain. In a new study, researchers have investigated how music training affects the brain's ability to focus attention on specific sounds.
The results show that musical people are better at using so-called top-down attention -- a conscious control of focus -- while being less sensitive to so-called bottom-up attention -- distracting sounds (see fact box).
"Our results suggest that music training strengthens the brain's ability to focus under distracting conditions," says lead author Cassia Low Manting, a researcher at the Department of Clinical Neuroscience, Karolinska Institutet.
In the study, participants listened to two melodies with different pitches simultaneously, and their task was to follow the pitch changes in one of them. Using a method called frequency tagging, the researchers were able to measure the brain's response to each melody separately. In two experiments with 28 and 20 participants, respectively, the researchers manipulated both conscious (top-down) and automatic (bottom-up) attention.
The results showed that people with high musical ability had stronger brain signals linked to conscious attention and weaker signals linked to automatic distractions.
"It's interesting to see how music training not only improves hearing but also the brain's ability to maintain attention over time. This may have applications in education and rehabilitation, where music can be used as a tool to improve attention and cognitive control," says Cassia Low Manting.
The researchers emphasize that the results cannot prove a causal link between music training and improved attention, but they do support the idea that music can have beneficial effects on the brain's cognitive functions.
The study is a collaboration between Karolinska Institutet and the Massachusetts Institute of Technology.
Funding: It has been funded by the Knut and Alice Wallenberg Foundation and the Swedish Foundation for Strategic Research. The researchers state that there are no conflicts of interest.
Author: Press Office
Source: Karolinska Institute
Contact: Press Office - Karolinska Institute
Image: The image is credited to Neuroscience News
Original Research: Open access.
"How musicality enhances top-down and bottom-up selective attention: Insights from precise separation of simultaneous neural responses" by Cassia Low Manting et al. Science Advances
Abstract
How musicality enhances top-down and bottom-up selective attention: Insights from precise separation of simultaneous neural responses
Natural environments typically contain a blend of simultaneous sounds. A substantial challenge in neuroscience is identifying specific neural signals corresponding to each sound and analyzing them separately.
Combining frequency tagging and machine learning, we achieved high-precision separation of neural responses to mixed melodies, classifying them by selective attention toward specific melodies.
Across two magnetoencephalography datasets, individual musicality and task performance heavily influenced the attentional recruitment of cortical regions, correlating positively with top-down attention in the left parietal cortex but negatively with bottom-up attention in the right.
In prefrontal areas, neural responses indicating higher sustained selective attention reflected better performance and musicality. These results suggest that musical training enhances neural mechanisms in the frontoparietal regions, boosting performance via improving top-down attention, reducing bottom-up distractions, and maintaining selective attention over time.
This work establishes the effectiveness of combining frequency tagging with machine learning to capture cognitive and behavioral effects with stimulus precision, applicable to other studies involving simultaneous stimuli.