#neuroscience

Rohan Paul

5个月前

Your brain's next 5 seconds, predicted by AI Transformer predicts brain activity patterns 5 seconds into future using just 21 seconds of fMRI data Achieves 0.997 correlation using modified time-series Transformer architecture ----- 🧠 Original Problem: Predicting future brain states from fMRI data remains challenging, especially for patients who can't undergo long scanning sessions. Current methods require extensive scan times and lack accuracy in short-term predictions. ----- 🔬 Solution in this Paper: → The paper introduces a modified time series Transformer with 4 encoder and 4 decoder layers, each containing 8 attention heads → The model takes a 30-timepoint window covering 379 brain regions as input and predicts the next brain state → Training uses Human Connectome Project data from 1003 healthy adults, with preprocessing including spatial smoothing and bandpass filtering → Unlike traditional approaches, this model omits look-ahead masking, simplifying prediction for single future timepoints ----- 🎯 Key Insights: → Temporal dependencies in brain states can be effectively captured using self-attention mechanisms → Short input sequences (21.6s) suffice for accurate predictions → Error accumulation follows a Markov chain pattern in longer predictions → The model preserves functional connectivity patterns matching known brain organization ----- 📊 Results: → Single timepoint prediction achieves MSE of 0.0013 → Accurate predictions up to 5.04 seconds with correlation >0.85 → First 7 predicted timepoints maintain high accuracy → Outperforms BrainLM with 20-timepoint MSE of 0.26 vs 0.568

#AI #brain #fMRI #Prediction #time-series #neuroscience #Technology

Wild Clips

5个月前

Real time MRI of a person talking

#MRI #real time MRI #talking #neuroscience #speech analysis #medical imaging

NO CONTEXT HUMANS

5个月前

There is no red in this picture, but your brain creates it 😳 Zoom in.

#Illusion #neuroscience #brain #optical effect #perception #visual perception

NO CONTEXT HUMANS

6个月前

He used 100% of his brain

#brain #potential #human_mind #cognitive_science #neuroscience