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

Year Number of Results
1978 1
1982 2
1985 1
1987 3
1988 3
1989 3
1991 4
1992 8
1993 8
1994 2
1995 9
1996 7
1997 4
1998 3
1999 1
2000 1
2001 5
2002 5
2004 2
2005 4
2006 7
2007 6
2008 3
2009 1
2023 0
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90 results
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Page 1
Education and dementia: what lies behind the association?
Ngandu T, von Strauss E, Helkala EL, Winblad B, Nissinen A, Tuomilehto J, Soininen H, Kivipelto M. Ngandu T, et al. Among authors: helkala el. Neurology. 2007 Oct 2;69(14):1442-50. doi: 10.1212/01.wnl.0000277456.29440.16. Neurology. 2007. PMID: 17909157
EEG findings in senile dementia and normal aging.
Soininen H, Partanen VJ, Helkala EL, Riekkinen PJ. Soininen H, et al. Among authors: helkala el. Acta Neurol Scand. 1982 Jan;65(1):59-70. doi: 10.1111/j.1600-0404.1982.tb03062.x. Acta Neurol Scand. 1982. PMID: 7064655
A voxel based morphometry study on mild cognitive impairment.
Pennanen C, Testa C, Laakso MP, Hallikainen M, Helkala EL, Hänninen T, Kivipelto M, Könönen M, Nissinen A, Tervo S, Vanhanen M, Vanninen R, Frisoni GB, Soininen H. Pennanen C, et al. Among authors: helkala el. J Neurol Neurosurg Psychiatry. 2005 Jan;76(1):11-4. doi: 10.1136/jnnp.2004.035600. J Neurol Neurosurg Psychiatry. 2005. PMID: 15607988 Free PMC article.
MRI of hippocampus and entorhinal cortex in mild cognitive impairment: a follow-up study.
Tapiola T, Pennanen C, Tapiola M, Tervo S, Kivipelto M, Hänninen T, Pihlajamäki M, Laakso MP, Hallikainen M, Hämäläinen A, Vanhanen M, Helkala EL, Vanninen R, Nissinen A, Rossi R, Frisoni GB, Soininen H. Tapiola T, et al. Among authors: helkala el. Neurobiol Aging. 2008 Jan;29(1):31-8. doi: 10.1016/j.neurobiolaging.2006.09.007. Epub 2006 Nov 13. Neurobiol Aging. 2008. PMID: 17097769
Tetrahydroaminoacridine improves the recency effect in Alzheimer's disease.
Riekkinen M, Soininen H, Riekkinen P Sr, Kuikka J, Laakso M, Helkala EL, Partanen J, Riekkinen P Jr. Riekkinen M, et al. Among authors: helkala el. Neuroscience. 1998 Mar;83(2):471-9. doi: 10.1016/s0306-4522(97)00400-4. Neuroscience. 1998. PMID: 9460755 Clinical Trial.
90 results