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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1958 3
1959 2
1965 3
1966 16
1967 40
1968 44
1969 45
1970 63
1971 98
1972 91
1973 123
1974 133
1975 100
1976 133
1977 111
1978 128
1979 151
1980 139
1981 144
1982 184
1983 178
1984 181
1985 200
1986 207
1987 210
1988 255
1989 258
1990 329
1991 343
1992 331
1993 356
1994 390
1995 345
1996 371
1997 376
1998 364
1999 396
2000 408
2001 412
2002 417
2003 445
2004 523
2005 595
2006 702
2007 765
2008 890
2009 894
2010 872
2011 978
2012 1060
2013 1161
2014 1098
2015 1189
2016 1199
2017 1166
2018 1108
2019 1043
2020 875
2021 570
2022 70
2023 18
2024 145

Search Results

22,599 results

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Page 1
Effects of caffeine on mood and memory.
Loke WH. Loke WH. Physiol Behav. 1988;44(3):367-72. doi: 10.1016/0031-9384(88)90039-x. Physiol Behav. 1988. PMID: 3222359 Clinical Trial.
Effects of BT-11 on memory in healthy humans.
Lee JY, Kim KY, Shin KY, Won BY, Jung HY, Suh YH. Lee JY, et al. Neurosci Lett. 2009 Apr 24;454(2):111-4. doi: 10.1016/j.neulet.2009.03.024. Epub 2009 Mar 11. Neurosci Lett. 2009. PMID: 19429065 Clinical Trial.
22,599 results
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