An Optimized Graph-based Deep Learning Framework for Depression Detection Using EEG Signals

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Author(s)

Alphonsa Sini P. J. 1,* Sherly K. K. 2

1. APJ Abdul Kalam Technological University, Rajagiri School of Engineering & Technology, Kerala, India

2. Department of Artificial Intelligence, Rajagiri School of Engineering & Technology, Kerala, India

* Corresponding author.

DOI: https://doi.org/10.5815/ijitcs.2026.04.06

Received: 16 Feb. 2026 / Revised: 10 Apr. 2026 / Accepted: 27 May 2026 / Published: 8 Aug. 2026

Index Terms

EEG, Depression Detection, Graph Convolutional Network, Modified Addax Optimization Algorithm, Efficientnetv2, Spiking Neural Network, Deep Learning

Abstract

Depression is a serious psychiatric disorder that greatly impacts the quality of life and daily functioning of a person. Accurate diagnosis at the early stage is critical for success with intervention. Electroencephalography (EEG) offers a non-invasive technique to assess neurophysiological activity and is thus an important instrument for diagnosis of depression. Current EEG-based deep learning approaches are beset by high-dimensional data, poor feature selection, and poor classification performance owing to the nature of the EEG signal. To address these issues, we introduce EEGEffV2-SpikeNet a new framework for depression detection that combines statistical feature extraction with deep feature extraction through a Graph Convolutional Network (GCN) approach. The proposed model incorporates a new fusion of statistical feature extraction and GCN-based deep feature learning for the extraction of both spatial and temporal EEG features. The extracted features are then optimized by Modified Addax Optimization Algorithm (MAOA), which is a cutting-edge bio-inspired optimization algorithm for optimizing feature selection efficiency by discarding redundant information and improving classification accuracy. For depression classification, EfficientNetV2, Deep Belief Network (DBN) and a Spiking Neural Network (SNN) are utilized based on the computational efficiency of EfficientNetV2 and the biologically simulated processing of SNN for enhancing feature representation and decision-making. Experimental results on two standard EEG datasets validate the better performance of the model, achieving 98.74% accuracy on Dataset 1 and 97.88% accuracy on Dataset 2, outperforming baseline models like DBN, EfficientNet, and SNN. The results prove the framework's promise as a dependable tool for objective and early depression diagnosis, with clinical application and mental health monitoring implications.

Cite This Paper

Alphonsa Sini P. J., Sherly K. K., "An Optimized Graph-based Deep Learning Framework for Depression Detection Using EEG Signals", International Journal of Information Technology and Computer Science(IJITCS), Vol.18, No.4, pp.85-104, 2026. DOI:10.5815/ijitcs.2026.04.06

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