John M. Olichney

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Amnesic patients often show improved performance when stimuli are repeated, even in the absence of conscious memory for those stimuli. Although these performance changes are typically attributed to perceptual or motor systems, in some cases they may be related to basic language processing. We examined two neurophysiological measures that vary with word(More)
OBJECTIVE We sought cognitive event-related potential (ERP) biomarkers of disease progression and subsequent conversion to dementia in mild cognitive impairment (MCI). BACKGROUND Two ERP components, the P600 and N400, are sensitive to abnormal episodic/declarative memory and semantic processing. When congruous category-exemplars are repeated, smaller(More)
We studied the frequency, severity, and clinical correlations of cerebral amyloid angiopathy (CAA) in 117 CERAD subjects with autopsy-confirmed AD. Eighty-three percent showed at least a mild degree of amyloid angiopathy. Thirty of 117 brains (25.6%) showed moderate to severe CAA affecting the cerebral vessels in one or more cortical regions. These brains(More)
Individuals given a series of words to memorize normally show better immediate recall for items from the beginning and end of the list than for mid-list items. This phenomenon, known as the serial position effect, is thought to reflect the concurrent contributions of secondary and primary memory, respectively, to recall performance. The present study(More)
OBJECTIVE To determine the relation between concomitant small cerebral infarction and clinical progression of Alzheimer disease (AD). DESIGN A retrospective clinicopathologic study of patients with AD. METHODS We searched the databases of the University of California, San Diego, Alzheimer's Disease Research Center, La Jolla, for patients with an autopsy(More)
OBJECTIVE To study cycad-derived products as possible risk factors for dementia, mild cognitive impairment (MCI), and parkinsonism-dementia complex (PDC) on Guam. METHODS Complete risk factor data from in-person interviews of 166 cases of Guam dementia, 50 cases of amnestic MCI, and 21 cases of PDC were compared with 1,581 controls in the base population(More)
OBJECTIVE To determine if severe cerebral amyloid angiopathy (AA) in patients with Alzheimer's disease (AD) is associated with an increased prevalence of cerebral infarction diagnosed at autopsy. Amyloid angiopathy is increasingly recognized as a cause of ischemic infarcts, as well as cerebral hemorrhages. However, the relationship of AA to cerebral(More)
OBJECTIVES To quantify the rate of cognitive decline on the Mini-Mental State Examination (MMSE) in autopsy-diagnosed Lewy body variant (LBV) of Alzheimer's disease (AD) cases. We hypothesized that LBV patients would have a faster cognitive decline and shorter survival compared with patients with pure AD. BACKGROUND Prior reports have shown extrapyramidal(More)
Minocycline normalizes synaptic connections and behavior in the knockout mouse model of fragile X syndrome (FXS). Human-targeted treatment trials with minocycline have shown benefits in behavioral measures and parent reports. Event-related potentials (ERPs) may provide a sensitive method of monitoring treatment response and changes in coordinated brain(More)