PMID- 11900820 OWN - NLM STAT- MEDLINE DCOM- 20031021 LR - 20190712 IS - 0091-3057 (Print) IS - 0091-3057 (Linking) VI - 72 IP - 1-2 DP - 2002 May TI - Acute nicotine effects on auditory sensory memory in tacrine-treated and nontreated patients with Alzheimer's disease: an event-related potential study. PG - 457-64 AB - The auditory mismatch negativity (MMN) event-related brain potential (ERP) reflects the storage of information in acoustic sensory memory. Thirteen patients with Alzheimer's disease (AD), 6 receiving treatment with the cholinesterase inhibitor, tacrine [tetrahydroaminoacridine (THA)], and 7 receiving no treatment, were administered 2 mg of nicotine polacrilex and placebo. MMNs were recorded with 1- and 3-s interstimulus intervals (ISIs) during pre- and post-placebo/nicotine administration. Amplitudes decreased from pre- to post-placebo recordings in nontreated patients but remained stable in THA-treated patients. Comparison of pre- and post-nicotine MMNs found amplitude increases with nicotine in nontreated but not in THA-treated patients. MMN latencies were shortened by nicotine in both treatment groups. These exploratory findings suggest that nicotine-improved strength of acoustic sensory memory traces and speed of acoustic sensory discrimination in AD are differentially affected by chronic tacrine treatment. FAU - Engeland, C AU - Engeland C AD - Department of Psychiatry and Psychology, University of Western Ontario, London, ON, Canada. FAU - Mahoney, C AU - Mahoney C FAU - Mohr, E AU - Mohr E FAU - Ilivitsky, V AU - Ilivitsky V FAU - Knott, Verner J AU - Knott VJ LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PL - United States TA - Pharmacol Biochem Behav JT - Pharmacology, biochemistry, and behavior JID - 0367050 RN - 4VX7YNB537 (Tacrine) RN - 6M3C89ZY6R (Nicotine) SB - IM MH - Acoustic Stimulation/methods MH - Aged MH - Aged, 80 and over MH - Alzheimer Disease/*drug therapy/physiopathology/psychology MH - Analysis of Variance MH - Cross-Over Studies MH - Double-Blind Method MH - Evoked Potentials, Auditory/*drug effects/physiology MH - Female MH - Humans MH - Male MH - Memory/*drug effects/physiology MH - Middle Aged MH - Nicotine/*administration & dosage MH - Tacrine/*therapeutic use EDAT- 2002/03/20 10:00 MHDA- 2003/10/22 05:00 CRDT- 2002/03/20 10:00 PHST- 2002/03/20 10:00 [pubmed] PHST- 2003/10/22 05:00 [medline] PHST- 2002/03/20 10:00 [entrez] AID - S0091305702007116 [pii] AID - 10.1016/s0091-3057(02)00711-6 [doi] PST - ppublish SO - Pharmacol Biochem Behav. 2002 May;72(1-2):457-64. doi: 10.1016/s0091-3057(02)00711-6.