5-HT_1A and muscarinic acetylcholine receptor jointly regulate passive avoidance behaviorRIEKKINEN, P. JR.European journal of pharmacology. 1994, Vol 262, Num 1-2, pp 77-90, issn 0014-2999Article

Nicotine and D-cycloserine enhance acquisition of water maze spatial navigation in aged ratsRIEKKINEN, M; RIEKKINEN, P. JR.Neuroreport (Oxford). 1997, Vol 8, Num 3, pp 699-703, issn 0959-4965Article

α₂-Adrenergic agonist clonidine for improving spatial working memory in Parkinson's diseaseRIEKKINEN, M; RIEKKINEN, P. JR.Journal of clinical psychopharmacology. 1999, Vol 19, Num 5, pp 444-449, issn 0271-0749Article

Effects of tetrahydroaminoacridine and nicotine in nucleus basalis and serotonin-lesioned ratsRIEKKINEN, P. JR; RIEKKINEN, M.European journal of pharmacology. 1995, Vol 279, Num 1, pp 65-73, issn 0014-2999Article

Effects of THA and physostigmine on spatial navigation and avoidance performance in mecamylamine and PCPA-treated ratsRIEKKINEN, M; RIEKKINEN, P. JR.Experimental neurology (Print). 1994, Vol 125, Num 1, pp 111-118, issn 0014-4886Article

Moderate cortical EEG changes in apolipoprotein E-deficient mice during ageing and scopolamine treatment but not after nucleus basalis lesionPUOLIVÄLI, J; PRADIER, L; RIEKKINEN, P. JR et al.Psychopharmacologia. 1999, Vol 145, Num 4, pp 386-392, issn 0033-3158Article

Apamin improves spatial navigation in medial septal-lesioned miceIKONEN, S; SCHMIDT, B; RIEKKINEN, P. JR et al.European journal of pharmacology. 1998, Vol 347, Num 1, pp 13-21, issn 0014-2999Article

Methoctramine moderately improves memory but pirenzepine disrupts performance in delayed non-matching to position testAURA, J; SIRVIÖ, J; RIEKKINEN, P. JR et al.European journal of pharmacology. 1997, Vol 333, Num 2-3, pp 129-134, issn 0014-2999Article

Effects of scopolamine infusions into the anterior and posterior cingulate on passive avoidance and water maze navigationRIEKKINEN, P. JR; KUITUNEN, J; RIEKKINEN, M et al.Brain research. 1995, Vol 685, Num 1-2, pp 46-54, issn 0006-8993Article

Interactions between 5-HT_1A and nicotinic cholinergic receptors in the regulation of water maze navigation behaviorRIEKKINEN, M; TOLONEN, R; RIEKKINEN, P. JR et al.Brain research. 1994, Vol 649, Num 1-2, pp 174-180, issn 0006-8993Article

Serotonin depletion decreases the therapeutic effect of nicotine, but not THA, in medial septal-lesioned ratsRIEKKINEN, P. JR; SIRVIÖ, J; RIEKKINEN, M et al.Brain research. 1994, Vol 662, Num 1-2, pp 95-102, issn 0006-8993Article

Effects of tetrahydroaminoacridine on spatial navigation of nucleus-basalis and frontal-cortex-lesioned ratsRIEKKINEN, P. JR; RIEKKINEN, M; SIRVIÖ, J et al.Pharmacology, biochemistry and behavior. 1992, Vol 41, Num 3, pp 637-641, issn 0091-3057Article

Similar memory impairments found in medial septal-vertical diagonal band of Broca and nucleus basalis lesioned rats: are memory defects induced by nucleus basalis lesions related to the degree of non-specific subcortical cell loss?RIEKKINEN, P. JR; SIRVIO, J; RIEKKINEN, P et al.Behavioural brain research. 1990, Vol 37, Num 1, pp 81-88, issn 0166-4328Article

Effects of stimulation of alpha₁-adrenergic and NMDA/glycine-B receptors on learning defects in aged ratsRIEKKINEN, M; KEMPPAINEN, S; RIEKKINEN, P. JR et al.Psychopharmacologia. 1997, Vol 131, Num 1, pp 49-56, issn 0033-3158Article

Cholinergic drugs regulate passive avoidance performance via the amygdalaRIEKKINEN, P. JR; RIEKKINEN, M; SIRVIÖ, J et al.The Journal of pharmacology and experimental therapeutics. 1993, Vol 267, Num 3, pp 1484-1492, issn 0022-3565Article

Pharmacological consequences of nicotinergic plus serotonergic manipulationsRIEKKINEN, M; SIRVIÖ, J; RIEKKINEN, P. JR et al.Brain research. 1993, Vol 622, Num 1-2, pp 139-146, issn 0006-8993Article

Relationship between the cortical choline acetyltransferase content and EEG delta-powerRIEKKINEN, P. JR; SIRVIO, J; RIEKKINEN, P et al.Neuroscience research. 1990, Vol 8, Num 1, pp 12-20, issn 0168-0102, 9 p.Article

Tetrahydroaminoacridine and D-cycloserine stimulate acquisition of water maze spatial navigation in aged ratsAURA, J; RIEKKINEN, M; RIEKKINEN, P. JR et al.European journal of pharmacology. 1998, Vol 342, Num 1, pp 15-20, issn 0014-2999Article

Behavioral characterization of metrifonate-improved acquisition of spatial information in medial septum-lesioned ratsRIEKKINEN, P. JR; SCHMIDT, B; RIEKKINEN, M et al.European journal of pharmacology. 1997, Vol 323, Num 1, pp 11-19, issn 0014-2999Article

Non-reversal of scopolamine- or age-related EEG changes by ondansetron, methysergide or alaproclateRIEKKINEN, P. JR; SIRVIOÊ, J; RIEKKINEN, P et al.Psychopharmacologia. 1991, Vol 103, Num 4, pp 567-570, issn 0033-3158, 4 p.Article

Tetrahydroaminoacridine inhibits high voltage spindle activity in aged rats after acute and chronic treatmentRIEKKINEN, P. JR; AALTONEN, M; RIEKKINEN, P et al.Psychopharmacologia. 1991, Vol 103, Num 2, pp 265-267, issn 0033-3158, 3 p.Article

Comparison of quisqualic and ibotanic acid nucleus basalis magnocellularis lesions on water-maze and passive avoidance performanceRIEKKINEN, M; RIEKKINEN, P; RIEKKINEN, P. JR et al.Brain research bulletin. 1991, Vol 27, Num 1, pp 119-123, issn 0361-9230Article

The effects of THA on medical septal lesion-induced memory defectsRIEKKINEN, P. JR; SIRVIÖ, J; RIEKKINEN, P et al.Pharmacology, biochemistry and behavior. 1990, Vol 36, Num 2, pp 237-241, issn 0091-3057Article

Effects of p-chlorophenylalanine and methysergide on the performance of a working memory taskJÄKÄLÄ, P; SIRVIÖ, J; RIEKKINEN, P. JR et al.Pharmacology, biochemistry and behavior. 1993, Vol 44, Num 2, pp 411-418, issn 0091-3057Article

EEG changes induced by acute and chronic quisqualic or ibotenic acid nucleus basalis lesions are stabilized by tacridineRIEKKINEN, P. JR; SIRVIO, J; RIEKKINEN, M et al.Brain research. 1991, Vol 559, Num 2, pp 304-308, issn 0006-8993Article