 examined how ambient lighting affects brain activity, attention maintenance, and cognitive performance in the paper 

Exploratory Study of Color Influence During an Academic Auditory Sustained Attention Test and the Implications for Educational Environments

, explores how different lighting conditions shape neurophysiological responses during learning-related tasks. 

 completed five auditory sustained-attention tests in immersive virtual environments. Brain activity was recorded using the 

, a wearable, water-based EEG system, while a Meta Quest Pro headset exposed participants to either blue or red light.

between the two conditions. Participants under blue lighting showed lower stress-related EEG measures and a stronger post-task alpha rebound, a response interpreted as a potential indicator of greater neural recovery following cognitive effort. 

Study explores how ambient lighting influences brain activity during learning tasks 

Sleep staging is essential for assessing sleep and sleep disorders, but conventional approaches often rely on complex laboratory setups and expert analysis. This study investigated whether automatic sleep scoring could be simplified while maintaining reliable performance.

Using a convolutional neural network (CNN), the researchers analyzed four open-access datasets from healthy participants and people with obstructive sleep apnea. The results showed that a single frontal EEG channel can provide reliable sleep-stage classification, with only minimal improvements when additional 

 channels or biosignals such as EOG, EMG and ECG are introduced.

The study also compared offline methods with causal approaches suitable for real-time use. Real-time sleep scoring achieved performance close to offline methods, supporting its potential for applications that need to identify sleep stages as they occur.

New study advances real-time sleep scoring with single-channel EEG

S-CEReBrO introduces a Windowed Alternating Attention mechanism designed to maintain constant attention-memory requirements as recordings become longer. According to the authors, the approach can process signals up to 100 times longer than full self-attention and three times longer than the low-rank linear-attention alternative evaluated in the study. 

The model was pre-trained on more than 25,000 hours of EEG from over 12,000 individuals and achieved leading results in seven of 11 downstream tasks. Its architecture contains 2.4 million parameters. 

Open sleep data supports advances in continuous EEG monitoring

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Bitbrain Highlights: Science