Atsushi Takeda, Kazuhiro Sakamoto, Haruna Tamano, Kotaro Fukura, Naoto Inui, Sang Won Suh, Seok-Joon Won, Hidehiko Yokogoshi (2011). «Facilitated Neurogenesis in the Developing Hippocampus After Intake of Theanine, an Amino Acid in Tea Leaves, and Object Recognition Memory». Cellular and Molecular Neurobiology31 (7): 1079-1088. doi:10.1007/s10571-011-9707-0.
Takashi YAMADA, Takehiko TERASHIMA, Hiroyuki HONMA, Shinichi NAGATA, Tsutomu OKUBO, Lekh Raj JUNEJA, Hidehiko YOKOGOSHI (2008). «Effects of Theanine, a Unique Amino Acid in Tea Leaves, on Memory in a Rat Behavioral Test». Bioscience, Biotechnology, and Biochemistry. Biochemistry & Molecular Biology Notes72 (5): 1356-1359. doi:10.1271/bbb.70669.
Sang-Ki Park, In-Chul Jung, Won Kyung Lee, Young Sun Lee, Hyoung Kook Park, Hyo Jin Go, Kiseong Kim, Nam Kyoo Lim, Jin Tae Hong, Sun Yung Ly, Seok Seon Rho (abril de 2011). «A Combination of Green Tea Extract and l-Theanine Improves Memory and Attention in Subjects with Mild Cognitive Impairment: A Double-Blind Placebo-Controlled Study». Journal of Medicinal Food14 (4): 334-343. doi:10.1089/jmf.2009.1374.
Pradeep J. Nathan, Kristy Lu, M. Gray, C. Oliver (2006). «The Neuropharmacology of L-Theanine(N-Ethyl-L-Glutamine) A Possible Neuroprotective and Cognitive Enhancing Agent». Journal of Herbal Pharmacotherapy6 (2): 21-30. doi:10.1080/J157v06n02_02.