Author

Niraj Hirachan

Observed institution: University of Canberra

ORCID: 0009-0000-0460-3077

Observed ORCID: 0009-0000-0460-3077

OpenAlex ID: A5078364359

Multimodal physiological sensing for the assessment of acute pain

2023 · Raul Fernandez Rojas, Niraj Hirachan, et al. · Frontiers in Pain Research · 89

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The AI4Pain Grand Challenge 2024: Advancing Pain Assessment with Multimodal fNIRS and Facial Video Analysis

2024 · Raul Fernandez–Rojas, Calvin Joseph, et al. · International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW) · 47

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Experimental Exploration of Multilevel Human Pain Assessment Using Blood Volume Pulse (BVP) Signals

2023 · Muhammad Umar Khan, Sumair Aziz, et al. · Sensors · 36

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Measuring Cognitive Workload Using Multimodal Sensors

2022 · Niraj Hirachan, Anita Mathews, et al. · Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) · 36

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The AI4Pain Grand Challenge 2025: Advancing Pain Assessment with Multimodal Physiological Signals

2025 · Raul Fernandez-Rojas, Calvin Joseph, et al. · Companion Publication of the International Conference on Multimodal Interaction (ICMI Companion) · 33

Multilevel Pain Assessment with Functional Near-Infrared Spectroscopy: Evaluating ΔHBO2 and ΔHHB Measures for Comprehensive Analysis

2024 · Muhammad Umar Khan, Maryam Sousani, et al. · Sensors · 27

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Acute Pain Recognition from Facial Expression Videos using Vision Transformers

2024 · Ghazal Bargshady, Calvin Joseph, et al. · Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) · 21

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A two-stage architecture for identifying and locating the source of pain using novel multi-domain binary patterns of EDA

2025 · Sumair Aziz, Calvin Joseph, et al. · Biomedical Signal Processing and Control · 18

"Where does it hurt?": Exploring EDA Signals to Detect and Localise Acute Pain

2023 · Sumair Aziz, Muhammad Umar Khan, et al. · Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) · 16

The AI4Pain Grand Challenge 2026: A Multimodal Physiological Dataset and Benchmark for Pain Detection and Localisation

2026 · Raul Fernandez-Rojas, Calvin Joseph, et al. · International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW) · 14

Pain intensity estimation via multimodal fusion: Leveraging ternary textures of derivatives in EDA and PPG signals

2025 · Muhammad Umar Khan, Niraj Hirachan, et al. · Biomedical Signal Processing and Control · 7

EEG-based Estimation of Cognitive Workload Across Multiple Tasks

2024 · Anita Susan Mathews, Niraj Hirachan, et al. · Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) · 3

Works count: 12

Citation count: 347

H-index: 10

I10-index: 10