Publications

Joshi, H., Nair, G., Roy, A. A., Havanur, S., Rangarajan, S. K., Sreeraj, V. S., Sinha, P., Narayanan, M., Kumar J, K., Sinha, S., Saini, J., Thangaraju, S. P., Varghese, M., Venkatasubramanian, G., & John, J. P. (2025). A functional MRI and magnetoencephalography study of the cognitive modulatory effect of transcranial direct current stimulation in early Alzheimer’s disease. medRxiv, 2025.04.02.24314106. https://doi.org/10.1101/2025.04.02.24314106 . Also, accepted at Network neuroscience in neuropsychiatric disorders, Frontiers in Human Neurosciences 01 April 2026, Sec. Brain Imaging and Stimulation, Volume 20 - 2026 | https://doi.org/10.3389/fnhum.2026.1767772

Joshi H, G A, Thomas MS, Nair G, PT Sivakumar, Venkatasubramanian G, John P John et al. Development of reference Image Quality Metrics for quantitative MRI research using MRIQC. In ALZ; 2025 https://alz.confex.com/alz/2025/meetingapp.cgi/Paper/109959 AAIC 2025, Toronto Canada July 27-31 2025

Apurva et al., Multilingualism and Cognitive Impairment: Are they related? Alzheimer’s Association International Conference, 2025

Kavya et al., Social Support and Loneliness in Healthy Elders & Cognitive Impairment in Alzheimer’s Association International Conference, 2025

Jyothi et al., Diagnostic Concordance between Clinical Dementia Rating, Hindi Mental State Examination and Clinical Evaluation in Alzheimer’s Association International Conference, 2025

Joshi, H., Sivakumar PT., Venkatasubramanian, G., John, J.P., Thompson, P.M., 2024. A novel fMRI memory paradigm designed for brain imaging studies in early Alzheimer’s Disease. Presented at the Alzheimer’s Association International Conference, https://doi.org/10.1002/alz.094041, AAIC 2024, Philadelphia, PA, USA, July 28–August 1, 2024.

Feng Y, Chandio BQ, Villalón-Reina JE, Benavidez S, Chattopadhyay T, Chehrzadeh S, Laltoo E, Thomopoulos SI, Joshi H, Venkatasubramanian G, John JP, Jahanshad N, Thompson PM (2024). Deep Normative Tractometry for Identifying Joint White Matter Macro- and Micro-structural Abnormalities in Alzheimer’s Disease. EMBC 2024, Orlando, Florida, USA, July 15-19, 2024.

Feng Y, Chandio BQ, Villalon-Reina JE, Thomopoulos SI, Joshi H, Nair G, Joshi AA, Venkatasubramanian G, John JP, Thompson PM (2023). BundleCleaner: Unsupervised Denoising and Subsampling of Diffusion MRI-Derived Tractography Data. In M. Karaman, R. Mito, E. Powell, F. Rheault, & S. Winzeck (Eds.), Computational Diffusion MRI (Vol. 14328, pp. 152–164). Springer Nature Switzerland. https://doi.org/10.1007/978-3-031-47292-3_14

Chattopadhyay T, Joshy N.A., Feng Y., Villalón-Reina J.E., Joshi H., Venkatasubramanian G., John J.P., Thompson P.M. (2024). Diffusion MRI-based Deep Learning to detect Alzheimer’s Disease in US and Indian Cohorts - OHBM 2024.

Chattopadhyay T, Joshy NA, Ozarkar SS, Buwa K, Feng Y, Laltoo E, Thomopoulos SI, Villalon JE, Joshi H, Venkatasubramanian G, John JP, and Thompson PM (2024). Deep Learning Algorithms for Alzheimer’s Disease Detection based on Diffusion MRI: Tests in Indian and North American Cohorts. AAIC 2024, Philadelphia, PA, USA, July 28–August 1, 2024.

Chattopadhyay T, Feng Y, Villalon JE, Joshi H, Venkatasubramanian G, John JP, Thompson PM (2023). 3D CNN Models for Brain Age Prediction from Diffusion MRI in North American and Indian Cohorts: Testing Generalizability. SFN 2023, Nov. 11-15 2023, Washington, DC, USA.

Chattopadhyay T, Joshy NA, Ozarkar SS, Buwa K, Feng Y, Laltoo E, Thomopoulos SI, Villalon JE, Joshi H, Venkatasubramanian G, John JP, Thompson PM (2024). Brain Age Analysis and Dementia Classification using Convolutional Neural Networks trained on Diffusion MRI: Tests in Indian and North American Cohorts. https://doi.org/10.1101/2024.02.04.578829. EMBC 2024, Orlando, Florida, USA, July 15-19, 2024.

Feng, Y., Chandio, B.Q., Villalon-Reina, J.E., Thomopoulos, S.I., Nir, T.M., Benavidez, S., Laltoo, E., Chattopadhyay, T., Joshi, H., Venkatasubramanian, G., John, J.P., Jahanshad, N., Reid, R.I., Jack, C.R., Weiner, M.W., Thompson, P.M., Alzheimer’s Disease Neuroimaging Initiative, 2025. Microstructural Mapping of Neural Pathways in Alzheimer’s Disease Using Macrostructure-Informed Normative Tractometry.” Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association 21 (1): e14371. https://doi.org/10.1002/alz.14371

Yixue Feng, Bramsh Q. Chandio, Julio E. Villal ́on-Reina, Sophia I.Thomopoulos, Himanshu Joshi, Gauthami Nair, Anand A. Joshi, Ganesan Venkatasubramanian, John P. John, and Paul M. Thompson. BundleCleaner: Unsupervised Denoising and Subsampling of Diffusion MRI-Derived Tractography Data. In: CDMRI’23 INTERNATIONAL WORKSHOP ON COMPUTATIONAL DIFFUSION MRI. Vancover, Canada: Springer Nature Switzerland AG; 2023

John P John, Himanshu Joshi, Aarthi G, Mekha Susan Thomas, Gowthami Nair, Subhashini K Rangarajan, Preeti Sinha, Ravikesh Tripathi, Anish V Cherian, Meera Purushottam, Biju Viswanath, Kandavel Thennarasu, Subashchandrabose Chinnathambi, Gokulakrishna, Reeteka Sud, Nikhil J Dhinagar, Tamoghna Chattopadhyay, Priya Rajagopalan, Neda Jahanshad, Vivek Benegal, Janardhana Reddy YC, Sanjeev Jain, Mathew Varghese, Sivakumar PT, Ganesan Venkatasubramanian and Paul M Thompson. India ENIGMA Initiative for Global Aging & Mental Health: A Globally Coordinated Study of Brain Aging and Alzheimer's Disease. In Alzheimer’s Association International Conference 23. Amsterdam, The Netherlands: Alzheimers Dementia: The Journal of the Alzheimer's Association; 2023
 
Joshi H, Bharath S, Rakesh B, Shilpa S, Harshita VV, Subramoniam A, Saini J, Kumar K, John JP, Varghese M. Differentiation of Early Alzheimer’s Disease, Mild Cognitive Impairment and Cognitively Healthy Elderly Samples using Multimodal Functional and Structural Neuroimaging Indices. Brain Connectivity 2019; October 31; DOI: 10.1089/brain.2019.0676.
Joshi H, Bharath S, John JP, Sadanand S, Saini J, Kumar KJ and Varghese M: Resting State Functional Connectivity Abnormalities and Delayed Recall Performance in Patients with Amnestic Mild Cognitive Impairment. Brain Imaging Behavior 2018; DOI: 10.1007/s11682-018-9974-1

Balachandar R, John JP, Joshi H, Sadanand S, Jitender S, Kumar K, Varghese M and Bharath S. Resting state functional connectivity changes associated with visuo-spatial cognitive deficits in patients with mild Alzheimer’s disease, Dementia and Geriatric Cognitive Disorders 2017; DOI: 10.1159/000457118.

Bharath S, Sadanand S, Kumar K J, Balachandar R, Joshi H, and Varghese M. 2017. Clinical and Neuropsychological Profile of Persons with Mild Cognitive Impairment, a Hospital Based Study from a Lower- and Middle-Income Country - ScienceDirect” 30 (December): 185–89. DOI: 10.1016/j.ajp.2017.10.007

Bharath S, Joshi H, John JP, Rakesh B, Shilpa S, Saini J, Keshav KJ, Varghese M. A Multimodal Structural and Functional Neuroimaging Study of Amnestic Mild Cognitive Impairment, American Journal of Geriatric Psychiatry 2016; DOI: 10.1016/j.jagp.2016.05.001.

Balachandar R, John JP, Saini J, Kumar KJ, Joshi H, Sadanand S, et al. A study of structural and functional connectivity in early Alzheimer’s disease using rest fMRI and diffusion tensor imaging. International Journal of Geriatric Psychiatry. 2014 Jul 3; 497–504.

Joshi H, Bharath S, Balachandar R, Sadanand S, Saini J, Varghese M, et al. Graph Theoretical Analysis of Functional Connectivity Perturbations in Mild Cognitive Impairment. Alzheimers Dement. 2016 Jul;12(7, Supplement): P730; DOI:10.1016/j.jalz.2016.06.1527

Joshi H, Bharath S, John JP, Balachandar R, Sadanand S, Saini J, Kumar KJ, Varghese M. Search for neuroimaging biomarkers of amnestic mild cognitive impairment: A multimodal structural and functional neuroimaging study. Alzheimers Dementia: The Journal of the Alzheimer's Association 2015 Jul 11(7): P695; DOI: 10.1016/j.jalz.2015.06.1543.

Bharath S, Shilpa S, Rakesh B, Joshi H, Keshav KJ, Andrews S, Varghese M. Clinical and neuropsychological profile of persons with mild cognitive impairment: A study from India Alzheimers Dementia: The Journal of the Alzheimer's Association 2015 Jul 11(7): P437; DOI: 10.1016/j.jalz.2015.06.424.

Balachandar R, Bharath S, John JP, Joshi H, Shilpa S, Sen S, Saini J, Kumar KJ Effect of apolipoprotein epsilon 4 allele on functional and structural connectivity of the brain in patients with mild Alzheimer’s disease. Alzheimers Dementia: Journal of the Alzheimer's Association 2015 Jul 11(7): P529. DOI: 10.1016/j.jalz.2015.06.660.

Joshi H, Balchandra R, John J, Bharath S, Varghese M. Comparative study of white matter integrity between mild Alzheimer’s dementia and mild cognitive impairment. Alzheimers Dementia: The Journal of the Alzheimer's Association 2013 Jul 9(4): P425–6; DOI: 10.1016/j.jalz.2013.05.839.