Selected Member Publications, Patents & Conference presentations

Affective computing    

Steephen, J. E., Obbineni, S. C., Kummetha, S., & Surampudi, B. R. (2020). HED-ID: An affective adaptation model explaining the intensity-duration relationship of emotion, IEEE Transactions on Affective Computing, 11(4), 736 - 750.  [Link] [Author's version] [Search]

Steephen, J. E. (2013). HED: A computational model of affective adaptation and emotion dynamics. IEEE Transactions on Affective Computing, 4(2), 197-210. [Link] [Author's version] [Search]

Computational Neuroscience

Steephen, J. E., Padmakumar, M., & Manchanda, R. (2026). Enhancement of Calcium Responses by KIR Current Inactivation in Medium Spiny Neurons. Journal of Biosciences 51:7.  

Padmakumar, M., Rajan, D., & Steephen, J. E. (2025). Effect of Focused Ultrasonic Stimulation via Intramembrane Cavitation in the Squid Giant Axon. In S. Appukuttan, J. S. Haas, & T. Nowotny (Eds.), Proceedings of the 33rd Annual Computational Neuroscience Meeting, Natal, Brazil. Journal of Computational Neuroscience, 53(Suppl 1), S11. 

Padmakumar, M., Brain, K. L., Young, J. S., and Manchanda, R. (2018). A four-component model of the action potential in mouse detrusor smooth muscle cell. PloS One, 13(1), e0190016. [Link] [Search]

Appukuttan, S., Padmakumar, M., Young, J. S., Brain, K. L., and Manchanda, R. (2018). Investigation of the syncytial nature of detrusor smooth muscle as a determinant of action potential shape. Frontiers in Physiology, 9, 1300. [Link] [Search]

Appukuttan, S., Padmakumar, M., Brain, K. L., and Manchanda, R. (2017). A method for the analysis of AP foot convexity: insights into smooth muscle biophysics. Frontiers in Bioengineering and Biotechnology, 5, 64. [Link] [Search]

Steephen, J. E. (2011). Excitability range of medium spiny neurons widens through the combined effects of inward rectifying potassium current inactivation and dopaminergic modulation. Neurocomputing, 74, 3884-3897. [Link] [Search]

Steephen, J. E., & Manchanda, R. (2009). Differences in biophysical properties of nucleus accumbens medium spiny neurons emerging from inactivation of inward rectifying potassium currents. Journal of Computational Neuroscience, 27, 453–470. [Link] [Search]

Cognitive Science

Steephen, J. E., Kummetha, S., Obbineni, S. C., & Surampudi, B. R. (2021). Mood-congruent biases in facial emotion perception and their gender dependence, International Journal of Psychology, 56(3), 378-386. [Link] [Search]

Steephen, J. E., Mehta, S. R., & Surampudi, B. R. (2018). Do we expect women to look happier than they are?: A test of gender-dependent perceptual correction, Perception, 47(2), 232-235. [Link] [Author's version] [Search]

Medical and Assistive Devices

Viswanathan, A. M., Tharion, J., Padmakumar, M., Joseph, J., & Steephen J. E. (2025). A device for preventing urethral balloon inflation complications in transurethral catheterization (Indian Patent Application No. 202441090389). The Patent Office, Govt. of India.

Tharion, J., Ismavel, V. A., Mammen, J., Viswanathan, A. M., Joseph, J., Steephen, J. E., Raj, A., Nair, S., Miriam, A., & Daniel, D. (2025). Novel Low-cost Intra-operative Autotransfusion Device. In 4th International Congress for Innovation in Global Surgery, Blantyre, Malawi. 

Tharion, J., Viswanathan, A. M., Joseph, J., Steephen, J. E., Ismavel, V. A. (2023). Novel Gravity-driven Device for Intra-operative Auto-transfusion In: Innovative Blood Transfusion Strategies for Blood Deserts in LMICs, Harvard Radcliffe Institute, Cambridge, 6-7 April, 2023.

Tharion, J., Steephen, J. E., Joseph, J., & Ismavel, V. A. (2023). A gravity-driven apparatus for blood salvage and autotransfusion (Indian Patent No. 539411). The Patent Office, Govt. of India. 

Jhunjhunwala, S., Tharion, J., Kapil, S., & Muthu, N. (2022). A portable mechanical ventilator for respiratory emergencies (Indian Patent Application No. 202031045726 ). The Patent Office, Govt. of India.

Tharion, J., Rao, Y. P. C., Muthu, N., & Kanagaraj, S. (2020). Vacuum assisted technique for in situ manufacturing of composite prosthetic socket on the residual stump of upper and lower limbs (Patent under filing process).

Tharion, J., Kapil, S., Muthu, N., & Kanagaraj, S. (2020). Rapid manufacturable ventilator for respiratory emergencies of COVID-19 disease. Trans Indian Natl. Acad. Eng. 5, 373–378. [Full paper]