G. H. Hammad

24.4k total citations
14 papers, 89 citations indexed

About

G. H. Hammad is a scholar working on Experimental and Cognitive Psychology, Cognitive Neuroscience and Health, Toxicology and Mutagenesis. According to data from OpenAlex, G. H. Hammad has authored 14 papers receiving a total of 89 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Experimental and Cognitive Psychology, 5 papers in Cognitive Neuroscience and 3 papers in Health, Toxicology and Mutagenesis. Recurrent topics in G. H. Hammad's work include Sleep and related disorders (7 papers), Sleep and Wakefulness Research (5 papers) and Multiple Sclerosis Research Studies (2 papers). G. H. Hammad is often cited by papers focused on Sleep and related disorders (7 papers), Sleep and Wakefulness Research (5 papers) and Multiple Sclerosis Research Studies (2 papers). G. H. Hammad collaborates with scholars based in Belgium, United Kingdom and Switzerland. G. H. Hammad's co-authors include Christina Schmidt, Vincenzo Muto, Marion Baillet, Pierre Maquet, Fabienne Collette, Gilles Vandewalle, Debra J. Skene, Mirjam Münch, Gabriel Besson and Daphné Chylinski and has published in prestigious journals such as SHILAP Revista de lepidopterología, SLEEP and PLoS Computational Biology.

In The Last Decade

G. H. Hammad

10 papers receiving 89 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
G. H. Hammad Belgium	6	45	45	19	14	10	14	89
Holli Bertram United States	7	35 0.8×	66 1.5×	41 2.2×	14 1.0×	16 1.6×	10	98
Necati Uzun Türkiye	6	28 0.6×	22 0.5×	26 1.4×	4 0.3×	12 1.2×	26	101
Margaret Wohlleber United States	2	68 1.5×	49 1.1×	17 0.9×	27 1.9×	9 0.9×	3	95
Navendu Gaur India	6	27 0.6×	36 0.8×	8 0.4×	7 0.5×	17 1.7×	8	92
Edelweiss Touron France	6	32 0.7×	26 0.6×	12 0.6×	16 1.1×	32 3.2×	14	74
Sarah E. Harris United Kingdom	3	33 0.7×	44 1.0×	17 0.9×	12 0.9×	10 1.0×	3	88
Monica Shieu United States	5	17 0.4×	19 0.4×	21 1.1×	23 1.6×	7 0.7×	11	68
Stéphane Rehel France	7	92 2.0×	73 1.6×	37 1.9×	28 2.0×	14 1.4×	17	122
Annika Dimitrov Germany	6	30 0.7×	34 0.8×	14 0.7×	3 0.2×	7 0.7×	8	98
K.-T. Khaw United Kingdom	2	74 1.6×	129 2.9×	32 1.7×	27 1.9×	5 0.5×	4	153

Countries citing papers authored by G. H. Hammad

Since Specialization

Citations

This map shows the geographic impact of G. H. Hammad'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 G. H. Hammad with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites G. H. Hammad more than expected).

Fields of papers citing papers by G. H. Hammad

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by G. H. Hammad. 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 G. H. Hammad. The network helps show where G. H. Hammad may publish in the future.

Co-authorship network of co-authors of G. H. Hammad

This figure shows the co-authorship network connecting the top 25 collaborators of G. H. Hammad. A scholar is included among the top collaborators of G. H. Hammad 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 G. H. Hammad. G. H. Hammad is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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14 of 14 papers shown

Baillet, Marion, Christian Berthomier, G. H. Hammad, et al.. (2025). Impact of Varying Sleep Pressure on Daytime Sleep Propensity in Healthy Young and Older Adults. Clocks & Sleep. 7(1). 2–2.

Vandewalle, Gilles, Christophe Phillips, Christian Berthomier, et al.. (2024). Circadian rapid eye movement sleep expression is associated with brain microstructural integrity in older adults. Communications Biology. 7(1). 758–758. 1 indexed citations

Hammad, G. H., Katharina Wulff, Debra J. Skene, Mirjam Münch, & Manuel Spitschan. (2024). Open-Source Python Module for the Analysis of Personalized Light Exposure Data from Wearable Light Loggers and Dosimeters. LEUKOS The Journal of the Illuminating Engineering Society of North America. 20(4). 380–389. 3 indexed citations

Spitschan, Manuel, G. H. Hammad, Christine Blume, et al.. (2024). Metadata recommendations for light logging and dosimetry datasets. SHILAP Revista de lepidopterología. 2(1). 73–73.

Baillet, Marion, Gilles Vandewalle, Pierre Maquet, et al.. (2023). Napping and circadian sleep–wake regulation during healthy aging. SLEEP. 47(5). 9 indexed citations

Hammad, G. H., et al.. (2023). Bidsme: expandable BIDS-ifier of brain imagerydatasets. The Journal of Open Source Software. 8(92). 5575–5575.

Berthomier, Christian, Vincenzo Muto, G. H. Hammad, et al.. (2023). Association between circadian sleep regulation and cortical gyrification in young and older adults. SLEEP. 46(9). 6 indexed citations

Hammad, G. H., et al.. (2022). Pupil response speed as a marker of cognitive fatigue in early Multiple Sclerosis☆. Multiple Sclerosis and Related Disorders. 65. 104001–104001. 7 indexed citations

Baillet, Marion, Fabienne Collette, Gilles Vandewalle, et al.. (2022). Daytime rest: Association with 24‐h rest–activity cycles, circadian timing and cognition in older adults. Journal of Pineal Research. 73(3). e12820–e12820. 6 indexed citations

10.

Hammad, G. H., et al.. (2021). pyActigraphy: Open-source python package for actigraphy data visualization and analysis. PLoS Computational Biology. 17(10). e1009514–e1009514. 37 indexed citations

11.

Hammad, G. H., et al.. (2020). Effects of cognitive load on cognitive fatigue in Multiple Sclerosis - Preliminary results. Open Repository and Bibliography (University of Liège). 1 indexed citations

12.

Hammad, G. H., et al.. (2019). pyActigraphy: Actigraphy made simple!. Open Repository and Bibliography (University of Liège). 2 indexed citations

13.

Egroo, Maxime Van, Daphné Chylinski, Gabriel Besson, et al.. (2019). Cognitive efficiency in late midlife is linked to lifestyle characteristics and allostatic load. Aging. 11(17). 7169–7186. 17 indexed citations

14.

Stone, S., et al.. (2016). Measurements of ttbar charge asymmetry using dilepton final states in pp collisions at √s=8 TeV. ORBi UMONS.

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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