Indu Ayappa

7.9k total citations · 3 hit papers
95 papers, 4.0k citations indexed

About

Indu Ayappa is a scholar working on Physiology, Endocrine and Autonomic Systems and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Indu Ayappa has authored 95 papers receiving a total of 4.0k indexed citations (citations by other indexed papers that have themselves been cited), including 73 papers in Physiology, 43 papers in Endocrine and Autonomic Systems and 37 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Indu Ayappa's work include Obstructive Sleep Apnea Research (70 papers), Neuroscience of respiration and sleep (43 papers) and Sleep and Wakefulness Research (26 papers). Indu Ayappa is often cited by papers focused on Obstructive Sleep Apnea Research (70 papers), Neuroscience of respiration and sleep (43 papers) and Sleep and Wakefulness Research (26 papers). Indu Ayappa collaborates with scholars based in United States, Spain and Canada. Indu Ayappa's co-authors include David M. Rapoport, Robert G. Norman, Sanjay R. Patel, Susheel P. Patil, Sean M. Caples, Christopher G. Harrod, R. John Kimoff, Jean-Jacques Hosselet, Ana C. Krieger and Kenneth I. Berger and has published in prestigious journals such as Journal of Neuroscience, PLoS ONE and Neurology.

In The Last Decade

Indu Ayappa

87 papers receiving 3.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Treatment of Adult Obstructive Sleep Apnea with Positive Airway Pressure: An American Academy of Sleep Medicine Clinical Practice Guideline

2019 470 citations Susheel P. Patil, Indu Ayappa et al. Journal of Clinical Sleep Medicine profile →
Treatment of Adult Obstructive Sleep Apnea With Positive Airway Pressure: An American Academy of Sleep Medicine Systematic Review, Meta-Analysis, and GRADE Assessment

2019 421 citations Susheel P. Patil, Indu Ayappa et al. Journal of Clinical Sleep Medicine profile →
Metrics of sleep apnea severity: beyond the apnea-hypopnea index

2021 238 citations Indu Ayappa, Reena Mehra et al. SLEEP profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Indu Ayappa United States	29	3.2k	2.4k	1.4k	1.1k	780	95	4.0k
P. E. Peppard United States	4	2.9k 0.9×	2.1k 0.9×	1.1k 0.8×	664 0.6×	725 0.9×	8	3.4k
Ali Azarbarzin United States	33	3.1k 1.0×	2.3k 1.0×	1.2k 0.8×	1.1k 1.0×	483 0.6×	144	3.5k
Arie Oksenberg Israel	37	2.5k 0.8×	2.1k 0.9×	896 0.6×	1.4k 1.2×	994 1.3×	103	3.9k
Dennis Auckley United States	24	3.7k 1.2×	2.9k 1.2×	1.5k 1.0×	1.2k 1.0×	1.4k 1.7×	76	5.0k
James A. Rowley United States	38	3.7k 1.2×	2.9k 1.2×	1.7k 1.2×	1.3k 1.1×	1.0k 1.3×	86	5.0k
Susmita Chowdhuri United States	22	3.4k 1.1×	2.6k 1.1×	1.4k 1.0×	1.4k 1.2×	1.1k 1.4×	52	4.6k
Renata L. Riha United Kingdom	32	2.4k 0.8×	1.9k 0.8×	1.1k 0.8×	904 0.8×	861 1.1×	116	3.7k
Bradley A. Edwards Australia	44	4.7k 1.5×	4.0k 1.7×	2.1k 1.5×	1.7k 1.5×	556 0.7×	149	5.6k
Winfried Randerath Germany	37	3.2k 1.0×	2.3k 1.0×	2.2k 1.5×	657 0.6×	438 0.6×	236	4.3k
Nigel McArdle Australia	28	2.2k 0.7×	1.7k 0.7×	1.0k 0.7×	612 0.5×	632 0.8×	67	2.9k

Countries citing papers authored by Indu Ayappa

Since Specialization

Citations

This map shows the geographic impact of Indu Ayappa's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Indu Ayappa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Indu Ayappa more than expected).

Fields of papers citing papers by Indu Ayappa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Indu Ayappa. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Indu Ayappa. The network helps show where Indu Ayappa may publish in the future.

Co-authorship network of co-authors of Indu Ayappa

This figure shows the co-authorship network connecting the top 25 collaborators of Indu Ayappa. A scholar is included among the top collaborators of Indu Ayappa based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Indu Ayappa. Indu Ayappa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Mullins, Anna, Ankit Parekh, Korey Kam, et al.. (2025). EEG slow oscillations and overnight spatial navigational memory performance in CPAP-treated obstructive sleep apnea. SLEEP. 48(8). 2 indexed citations

Gaggi, Naomi, Korey Kam, Ümit Tural, et al.. (2025). Enhancing sleep, wakefulness, and cognition with transcranial photobiomodulation: a systematic review. Frontiers in Behavioral Neuroscience. 19. 1542462–1542462.

Ayappa, Indu, Robert Laumbach, Kathleen Black, et al.. (2024). Nasal resistance and inflammation: mechanisms for obstructive sleep apnea from chronic rhinosinusitis. Journal of Clinical Sleep Medicine. 20(10). 1627–1636.

Ramos‐Cejudo, Jaime, Ankit Parekh, Omonigho M. Bubu, et al.. (2024). Obstructive Sleep Apnea, Platelet Aggregation, and Cardiovascular Risk. Journal of the American Heart Association. 13(15). e034079–e034079. 7 indexed citations

Tolbert, Thomas M., et al.. (2023). Night-to-night reliability and agreement of obstructive sleep apnea pathophysiologic mechanisms estimated with phenotyping using polysomnography in cognitively normal elderly participants. SLEEP. 46(8). 16 indexed citations

Orr, Jeremy E., Indu Ayappa, Danny J. Eckert, et al.. (2021). Research Priorities for Patients with Heart Failure and Central Sleep Apnea. An Official American Thoracic Society Research Statement. American Journal of Respiratory and Critical Care Medicine. 203(6). e11–e24. 26 indexed citations

Parekh, Ankit, Thomas M. Tolbert, Anne M. Mooney, et al.. (2021). Endotyping Sleep Apnea One Breath at a Time: An Automated Approach for Separating Obstructive from Central Sleep-disordered Breathing. American Journal of Respiratory and Critical Care Medicine. 204(12). 1452–1462. 15 indexed citations

Mullins, Anna, Korey Kam, Ankit Parekh, et al.. (2021). Effects of obstructive sleep apnea on human spatial navigational memory processing in cognitively normal older individuals. Journal of Clinical Sleep Medicine. 17(5). 939–948. 11 indexed citations

Reid, Michelle, Zahi A. Fayad, Indu Ayappa, et al.. (2021). Sleep duration and vascular inflammation using hybrid positron emission tomography/magnetic resonance imaging: results from the Multi-Ethnic Study of Atherosclerosis. Journal of Clinical Sleep Medicine. 17(10). 2009–2018. 9 indexed citations

10.

Kishi, Akifumi, Hans P. A. Van Dongen, Benjamin H. Natelson, et al.. (2017). Sleep continuity is positively correlated with sleep duration in laboratory nighttime sleep recordings. PLoS ONE. 12(4). e0175504–e0175504. 7 indexed citations

11.

Varga, Andrew W., Akifumi Kishi, Esther Fischer, et al.. (2016). Effects of aging on slow-wave sleep dynamics and human spatial navigational memory consolidation. Neurobiology of Aging. 42. 142–149. 76 indexed citations

12.

Chowdhuri, Susmita, Stuart F. Quan, Fernanda R. Almeida, et al.. (2016). An Official American Thoracic Society Research Statement: Impact of Mild Obstructive Sleep Apnea in Adults. American Journal of Respiratory and Critical Care Medicine. 193(9). e37–e54. 119 indexed citations

13.

Hilz, Max J., et al.. (2016). Obstructive Sleep-Disordered Breathing Is More Common than Central in Mild Familial Dysautonomia. Journal of Clinical Sleep Medicine. 12(12). 1607–1614. 5 indexed citations

14.

Parekh, Ankit, Ivan Selesnick, David M. Rapoport, & Indu Ayappa. (2015). Detection of K-complexes and sleep spindles (DETOKS) using sparse optimization. Journal of Neuroscience Methods. 251. 37–46. 59 indexed citations

15.

Chen, Qian, et al.. (2011). Changes in lung volume and upper airway using MRI during application of nasal expiratory positive airway pressure in patients with sleep-disordered breathing. Journal of Applied Physiology. 111(5). 1400–1409. 33 indexed citations

16.

Ayappa, Indu, et al.. (2008). Validation of a Self-Applied Unattended Monitor for Sleep Disordered Breathing. Journal of Clinical Sleep Medicine. 4(1). 26–37. 101 indexed citations

17.

Ayappa, Indu, Kenneth I. Berger, Robert G. Norman, et al.. (2002). Hypercapnia and Ventilatory Periodicity in Obstructive Sleep Apnea Syndrome. American Journal of Respiratory and Critical Care Medicine. 166(8). 1112–1115. 82 indexed citations

18.

Hosselet, Jean-Jacques, Indu Ayappa, Robert G. Norman, Ana C. Krieger, & David M. Rapoport. (2001). Classification of Sleep-disordered Breathing. American Journal of Respiratory and Critical Care Medicine. 163(2). 398–405. 90 indexed citations

19.

Hosselet, Jean-Jacques, Robert G. Norman, Indu Ayappa, & David M. Rapoport. (1998). Detection of Flow Limitation with a Nasal Cannula/ Pressure Transducer System. American Journal of Respiratory and Critical Care Medicine. 157(5). 1461–1467. 227 indexed citations

20.

Ayappa, Indu, et al.. (1998). Relative Occurrence of Flow Limitation and Snoring During Continuous Positive Airway Pressure Titration. CHEST Journal. 114(3). 685–690. 28 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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