Search bioRxiv⌕ Search

Biology subjects

Geman, O.

Publications and source records attributed to Geman, O..

2 recordsLinked to original sources

Application of Explainable AI in Neuroscience: Enhancing Autism Screening

The main challenges in the life of a child with autism are difficulties in communication, behavior, and social interaction. Early diagnosis of this neurodevelopmental disorder improves patient outcomes by enabling more effective, personalized interventions. This diagnosis can sometimes be difficult, especially in very young children. Non-invasive, relatively accessible, and able to reflect neural function in real time, electroencephalography (EEG) shows promise in the detection of Autism spectrum disorders (ASD). However, because EEG data is still difficult for experts to understand, machine learning and artificial intelligence (AI) are beginning to be used in this field as well. In this paper, a ResNet+BiLSTM hybrid deep network was applied and achieved high accuracy in distinguishing individuals with autism from neurotypical subjects. Since AI models typically provide predictions without clear explanations, this study employs explainable AI (XAI) methods such as SHAP (SHapley Additive exPlanations) and LIME (Local Interpretable Model-agnostic Explanations) to clarify their decision-making.Delta, theta, alpha, beta, and gamma waves, as well as ERP components P100, N100, P200, MMN, and P600, were analyzed in the two neurotypical and autistic groups that were compared in this study using EEG recordings. By integrating SHAP and LIME, the system achieved both accurate classification and transparent explanations, pointing to EEG- and ERP-based features as reliable biomarkers for ASD.

neuroscience↗

N100 as a Neural Marker of Atypical Early Auditory Encoding in Autism: Sensitivity to Pitch, Distance-Based Intensity, and Spatial Location

BackgroundIndividuals with Autism Spectrum Disorder (ASD) show atypical auditory perception. The N100 event-related potential (ERP) reflects early auditory encoding, predictive coding, and sensory gain. Therefore, this study examined N100 responses to speech stimuli as a neural marker of auditory processing differences in ASD. MethodsEvent-related potentials (ERPs) were recorded using OpenBCI in 12 boys diagnosed with Level 1 ASD (requiring minimal support) and 15 typically developing (TD) peers. Participants passively listened to Romanian sentences systematically varied in pitch (normal, high, low), distance-based intensity (0.5, 1, 2 meters; 65, 59, 53 dB), and spatial presentation (binaural, left, right). N100 amplitudes and latencies were analyzed using Python and SPSS. ResultsASD group indicated significantly reduced N100 amplitudes for normal-pitch stimuli (p = .030, {superscript 2} = .175) and binaural presentation (p = .030, {superscript 2} = .175). Marginal reductions were also observed for low pitch (p = .096, {superscript 2} = .120), speech presented from a 0.5-meter distance (p = .058, {superscript 2} = .147), and unilateral conditions (ps = .066-.077, {superscript 2}s = .130-.142). No group differences emerged for N100 latency. These findings suggest attenuated early auditory responses in ASD to both typical and spatially complex speech cues. ConclusionsResults support predictive coding models proposing reduced sensory precision in ASD. The consistent amplitude attenuation, including near-significant findings, points to subtle but pervasive impairments in early auditory encoding. The use of ecologically valid speech stimuli and portable EEG underscores the translational potential of N100 as a biomarker for early identification and intervention in autism.

neuroscience↗