27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Quantitative electroencephalography (QEEG) is a modern type of electroencephalography (EEG) analysis that involves recording digital EEG signals which are processed, transformed, and analyzed using complex mathematical algorithms. 1 key finding →
Evidence: low
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These measures offer a sensitive method of assessing spontaneous speech output in AD, and they discriminate well between people with AD and healthy older adults. 2 key findings →
Evidence: low
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Neuropsychiatric features characterize frontotemporal dementia (FTD). 5 key findings →
Evidence: low
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Our results suggest that DTI data provide better prediction accuracy than GM volume in predementia AD. 3 key findings →
Evidence: low
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In these, at least one cardinal symptom or sign of PSP later emerges, associated with smaller midbrain volume and increased pons/midbrain ratio. 4 key findings →
Evidence: low
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We report a patient with advanced Parkinson's disease, including severe and frequent off periods with freezing of gait, moderate dysphonia, and some cognitive impairment, who underwent bilateral subthalamic nucleus (STN) stimulation. 2 key findings →
Evidence: low
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In order to explore the impact of a degraded semantic system on the structure of language production, we analysed transcripts from autobiographical memory interviews to identify naturally-occurring speech errors by eight patients with semantic dementia (SD) and eight age-matched normal speakers. 2 key findings →
Evidence: low
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We describe a right-handed man who developed progressive nonfluent aphasia and apraxia of speech beginning at age 71. 2 key findings →
Evidence: low
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SPLS outperformed PLS, finding statistically significant effects and providing higher correlation values in hold-out data. 5 key findings →
Evidence: low
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Personal attributes, environmental factors, and stimulus characteristics all contribute to the level and nature of engagement, with a secondary finding being that exposure to any stimulus elicits engagement in persons with dementia. 5 key findings →
Participants: 24 Evidence: low
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The verbal fluency task (VFT) is a well-established cognitive marker for mild cognitive impairment (MCI) in the prodromal stage of Alzheimer´s dementia (AD). 2 key findings →
Evidence: low
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Recent neuroimaging studies proposed the importance of the anterior auditory pathway for speech comprehension. 3 key findings →
Evidence: low
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Patients with frontotemporal dementia (FTD) have sentence comprehension difficulty. 5 key findings →
Evidence: low
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The status of semantic priming in Alzheimer's disease (AD) was examined using the speech elicited N400 component of the event-related brain potential (ERP). 1 key finding →
Evidence: low
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We examined the abilities of 15 patients with dementia of the Alzheimer type (DAT), 22 patients with Parkinson's Disease (PD), and 141 healthy subjects (ranging in age from 30 to 79 years) to detect and correct their own speech errors. 1 key finding →
Participants: 15 Evidence: low
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Frontotemporal dementia is commonly associated with parkinsonism in several sporadic (i.e., progressive supranuclear palsy, corticobasal degeneration) and familial neurodegenerative disorders (i.e., frontotemporal dementia associated with parkinsonism and MAPT or progranulin mutations in chromosome 17). 1 key finding →
Evidence: low
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Five patients developed a stereotyped syndrome of progressive akinesia of gait, speech, and hand-writing without rigidity, tremor, or dementia. 3 key findings →
Evidence: low
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The frontotemporal dementias are a group of relatively new and evolving clinical and pathologic entities. 5 key findings →
Evidence: low
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This study explored digital health literacy skills, self-efficacy in utilizing digital health resources, and self-efficacy in managing personal health among caregivers of individuals with Alzheimer's disease and related dementias (ADRD). 2 key findings →
Evidence: low
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IntroductionThe prevalence of neurodegenerative diseases has significantly increased, necessitating a deeper understanding of their symptoms, diagnostic processes, and prevention strategies. 2 key findings →
Design: narrative review Evidence: low
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Alzheimer's dementia (AD) is a degenerative brain disease characterized by a decline in cognitive function and memory. 1 key finding →
Design: longitudinal study Evidence: moderate
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High Resolution Image Download MS PowerPoint Slide The aggregation of α-synuclein is crucial to the development of Lewy body diseases, including Parkinson’s disease and dementia with Lewy bodies. 1 key finding →
Evidence: low
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On the test set, MICE imputation yielded the highest accuracy for both RF (0.76) and LR (0.81), while SVM performed best with median imputation (0.81). 5 key findings →
Evidence: low
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Epidemiological data show that both PD incidence rate and prevalence rate show a significant age-dependent growth trend [3]. 5 key findings →
Design: cross-sectional Evidence: low
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Using raw data from the CFD and the GLMnet algorithm, we could accurately differentiate between DEM vs. HC with accuracies ranging up to 94.0%. 4 key findings →
Participants: 407 Evidence: low
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Free full text links and the Full text may need a subscription label come from Unpaywall, Europe PMC and OpenAlex records of free copies, checked 10 Oct 2026. A study with neither is unknown, not paywalled. Show only studies that are free to read
This is alzhub's own score. It is not an official metric, not an impact factor, and no journal, publisher or ranking body endorses it. We built it so that a reader who is not a scientist can tell a landmark trial from a conference abstract without having to already know the difference. Every point comes from one of 20 components, all of them printed on the study itself, so you can disagree with our arithmetic rather than having to trust the total.
Journals are placed in ordered tiers, never given a numeric impact factor — we could not verify current impact factors from a source we control, and an invented one would be worse than none. Tier 1 is the top-tier general journals (NEJM, The Lancet, JAMA, Nature, Science, Nature Medicine); tier 2 is the leading specialty journals; tier 3 is every other peer-reviewed journal. A separate part scores how much the journal's own papers are cited, which tells the tier-3 journals apart.
Two rules we don't bend. First, we never fill in a missing value: if a record does not state a sample size or a design, that component scores zero, and if we simply have no data for a part, such as a citation count, that part is left out and the study is scored on the parts we could check. The study card says which. Second, anything that is not a peer-reviewed article is capped at 16/100 and carries a warning chip — so a conference abstract or a company press release can never outrank a peer-reviewed paper, no matter how good it looks.
We rank a rigorous null result — a good trial showing that something does not work — above an early positive finding. Someone deciding whether to buy a supplement is served by that, and the rigour is already counted by the design and journal components.
The score is computed from the published data alone and is reproducible: the same file always yields the same numbers.
See the whole rubric drawn out → — four charts covering all 27,380 studies: how the scores are spread and where the cap bites, which of the 20 components the library is strong and weak on, which subjects rest on stronger evidence, and what kinds of study each subject is actually built from.
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 27,380 records, built mostly from automated pulls of Europe PMC (60.6% of the library) and OpenAlex (18.6%), plus smaller pulls from PubMed, Crossref and medRxiv. If a study, a drug, or a finding isn't here, that is not evidence it doesn't exist in the literature — it may simply not have been pulled in yet.
1,032 records (3.8% of the library) are not peer-reviewed — 962 of those are preprints posted before any journal review, and the rest are conference abstracts, regulatory notices and reports. Every study card on this page states its status plainly, and the score above is capped for anything that isn't a peer-reviewed article.
See the full, machine-readable breakdown of this library's coverage →