-- Artificial intelligence and machine learning. -- EEG-based classification of passive pedaling speeds using SVM: a promising approach for enhancing lower limb rehabilitation technologies. -- Data augmentation by adaptative targeted zoom for MRI brain tumor segmentation. -- Riemannian electrocardiographic signal classification. -- Computational neuroscience. -- Evaluation of Wnt/β-Catenin pathway modulation on CA3-CA1 synaptic plasticity model. -- In silico application of the epsilon-greedy algorithm for frequency optimization of electrical neurostimulation for hypersynchronous disorders. -- Fuzzy control with Central Pattern Generators for the locomotion of quadruped robotic systems. -- Brain-Computer Interfaces. -- Comparison of visual and kinesthetic motor imagery for upper limb activity. -- Effect of imagery training on biomechanical aspects of a sport skill in gymnasts of the Met Chia Club. -- Influence of delays in functional connectivity to distinguish motor imagery tasks. -- Impact of ocular artifact removal on EEG-based color classification for locked-in syndrome BCI communication.

This book constitutes the refereed proceedings of the 4th Latin American Workshop, LAWCN 2023, held in Envigado, Colombia, during November 28–30, 2023. The 8 full papers and 2 short papers included in this book were carefully reviewed and selected from 50 submissions. They were organized in topical sections as follows: artificial intelligence and machine learning; computational neuroscience; and brain-computer interfaces.