# EEG Signal Classification Using Convolutional Recurrent Neural Networks (CRNN)
## Project Overview
This project aims to classify Electroencephalography (EEG) data obtained from the Brain-Computer Interaction (BCI) Competition IV. The data encompasses recordings of four distinct motor imaginary tasks: movement of the left hand, right hand, both feet, and tongue. We utilize a Convolutional Recurrent Neural Network (CRNN) architecture, incorporating bidirectional Long Short-Term Memory (LSTM) units, to classify the EEG data into these four tasks.
## Team Members
- Krish Patel
- Aryan Singh
## Motivation
EEG signal classification is a pivotal task in brain-computer interfaces (BCI), with applications ranging from assistive technologies to medical diagnosis. By leveraging CRNNs, we aim to capture both spatial and temporal dependencies within the EEG signals for improved classification accuracy.
## Architecture
Our approach employs three distinct models:
1. **Vanilla CNN:** Utilizes convolutional layers for spatial feature extraction.
2. **CNN + LSTM:** Combines convolutional layers with LSTM units to capture both spatial and temporal features.
## Results
- **Vanilla CNN:** Achieved a highest accuracy of 65.7% with a training time of approximately 25-35 minutes.
- **CNN + LSTM:** Reached a highest accuracy of 64.1% after training for around 3-4 hours.
- Detailed performance metrics and a comparative analysis are provided in the report.
## Key Findings
- Temporal dependencies play a crucial role in EEG signal classification.
- The optimal performance requires balancing spatial and temporal feature extraction.
- Model performance varies significantly across different subjects, highlighting the need for personalized model adjustments.
## Future Directions
- **Data Preprocessing:** Explore advanced techniques for data cleaning and preprocessing.
- **Hyperparameter Optimization:** Fine-tune model parameters, especially for LSTM units.
- **Alternative Architectures:** Investigate other RNN variants and incorporate attention mechanisms.
## Installation and Usage
Details on how to install dependencies and run the project are provided in the subsequent sections.
## Dependencies
- Python 3.x
- TensorFlow 2.x
- Keras
- NumPy
- Pandas
## How to Run
Download the publically available EEG dataset from: https://www.bbci.de/competition/iv/, and set the path in both of the notebooks to the unzipped folder containing the data.
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EEG-运动想象分类-CRNN+LSTM算法-BCI竞赛 IV
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# EEG Signal Classification Using Convolutional Recurrent Neural Networks (CRNN) 本项目旨在对脑机交互(BCI)竞赛IV中获得的脑电图(EEG)数据进行分类。这些数据包括四种不同的运动想象任务的记录:左手、右手、双脚和舌头的运动。我们利用卷积循环神经网络(CRNN)架构,结合双向长短期记忆(LSTM)单元,将EEG数据分为这四个任务。 脑电信号分类是脑机接口(BCI)中的一项关键任务,其应用范围从辅助技术到医学诊断。通过利用crnn,我们的目标是捕获EEG信号中的空间和时间依赖关系,以提高分类精度。
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