md rizman md lazin md lazim, amilia aminuddin, kalaivani chellappan,azizah ugusman, adila a hamid, wan amir nizam wan ahmad and mohd shawal faizal mohamad.  (2020).  is heart rate a confounding factor for photoplethysmography markers? a systematic review.  - international journal of environmental research and public health.  1-12. 

siti zamratol mai sarahmukari, yusmeera yusof, wan syafira ishak, nashrah maamor, kalaivani chellapan, mariam adawiah dzulkifli.  (2020).  relative contributions of auditory and cognitive functions on speech recognition in quiet and in noise among older adults.  - brazilian journal of otorhinolaryngology.  149-156. 

mohd syakir fathillah, kalaivani chellappan, rabani remli, rosmina jaafar, wan asyraf wan zaidi.  (2018).  computerized recognition of epileptic discharge (creed) algorithm and its clinical application.  - clinical neurophysiology.  . 

amilia aminuddin, isabella tan, mark butlin, alberto p. avolio, hosen kiat, edward barin, nor anita megat mohd nordin, kalaivani chellappan.  (2018).  effect of increasing heart rate on finger photoplethysmography fitness index (ppgf) in subjects with implanted cardiac pacemakers.  - plos one.  1-11. 

ammar a. k. timimi, m. a. mohd ali, and k. chellappan.  (2017).  a novel amars technique for baseline wander removal applied to photoplethysmogram.  - ieee transactions on biomedical circuits and systems.  627-639. 

kalaivani chellappan nor shahirah shaik amir, shahizon a mohamed mukari, law zhe kang, ramesh sahathevan.  (2016).  identifying imaging parameters that distinguish cerebral amyloid angiopathy hemorrhage (caah) from intracerebral hemorrhage (ich).  - international journal of stroke.  271. 

kalaivani chellappan, raska uroshi, oteh maskon, ramesh sahathevan.  (2016).  non-invasive finger photoplethysmogram in detection of left ventricular hypertrophy among stroke patients.  - international journal of stroke.  221. 

kalaivani chellappan, siti nur hidayah abdul malek, rosmina jaafar, amilia aminuddin.  (2016).  self-monitoring technique for stroke prevention among atrial fibrillation patients.  - international journal of stroke.  248. 

kalaivani chellappan, khairul muslim nordin and ramesh sahathevan.  (2016).  personalised post stroke finger grip rehabilitation monitoring framework & prototype.  - international journal of stroke.  261. 

chellappan k, sahathevan r.  (2015).  accelerated aging and noninvasive cardiovascular risk monitoring.  - cerebrovascular diseases.  25-27. 

mohd radzi, a; rambely, a; chellapan, k.  (2014).  rope skipping as a measure to fight obesity.  - obesity reviews.  15(S2):200. 

al-qazzaz, noor kamal; ali, sawal hamid bin md.; ahmad, siti anom; chellappan, kalaivani; islam, md. shabiul; escudero, javier..  (2014).  role of eeg as biomarker in the early detection and classification of dementia..  - the scientific world journal..  2014: 1-16.. 

chellappan, k..  (2014).  nonoinvasive vascular risk prediction using photoplethysmogram.  - journal of neuroepidemiology.  71-113. 

k chellappan, r sahathevan, sa mukari, aa abd rahni, as muda, zk law, fa hamzah, i hossian akra.  (2014).  volumetric quantification of infarct core and penumbra for stroke patients using multimodal ct imaging.  - international journal of stroke.  132. 

rubana h. chowdhury, mamun b. i. reaz, mohd alauddin bin mohd ali, ashrif a. a. bakar, k. chellappan, t. g. chang.  (2013).  surface electromyography signal processing and classification techniques.  - sensors.  13(9):12431-12466.