Results 151 to 160 of about 73,004 (270)

Correspondence of Basal Forebrain Resting‐State Functional Connectivity and Cerebral Glucose Metabolism Alterations With Neurotransmitter Maps in Alzheimer's Disease

open access: yesCNS Neuroscience &Therapeutics, Volume 32, Issue 5, May 2026.
Altered functional connectivity of basal forebrain subregions (Ch1‐3, Ch4) and widespread cerebral hypometabolism were identified in Alzheimer's disease using simultaneous PET/MRI. Spatial correspondence with normative neurotransmitter receptor and transporter maps suggested that serotonergic and dopaminergic systems may contribute to AD‐related ...
Yujie He   +11 more
wiley   +1 more source

Multivariate MR Biomarkers Better Predict Cognitive Dysfunction in Mouse Models of Alzheimers Disease

open access: yes, 2018
To understand multifactorial conditions such as Alzheimers disease (AD) we need brain signatures that predict the impact of multiple pathologies and their interactions.
Anderson, RJ   +9 more
core  

From Low Field to High Value: Robust Cortical Mapping From Low‐Field MRI

open access: yesHuman Brain Mapping, Volume 47, Issue 7, May 2026.
Recon‐any processes a brain MRI acquired with arbitrary contrast, resolution, and field strength to generate morphometric measurements comparable to FreeSurfer's recon‐all, including cortical (parcellation, thickness, etc.) and volumetric (segmentation, regional volumes) outputs.
Karthik Gopinath   +15 more
wiley   +1 more source

Selective Modulation of Evidence Accumulation by Hippocampal Theta Oscillations During Mnemonic Decision‐Making

open access: yesHuman Brain Mapping, Volume 47, Issue 7, May 2026.
Hippocampal theta power during memory retrieval predicts evidence accumulation in a mnemonic similarity task. Trial‐level MEG signals were integrated with a linear ballistic accumulator model, revealing that theta oscillations modulate decision dynamics, linking neural variability to memory‐based discrimination performance.
Pei L. Robins   +7 more
wiley   +1 more source

Entorhinal cortex

open access: yesScholarpedia, 2011
openaire   +1 more source

The In Vivo Microstructural Profile of Human Hippocampal Subfield CA1 and Its Relation to Memory Performance

open access: yesHuman Brain Mapping, Volume 47, Issue 7, May 2026.
Using 7 T structural MRI, we mapp layer‐dependent microstructural profiles of hippocampal subfield CA1 in vivo and linked them to individual differences in memory performance. The results reveal detectable, layer‐specific myelin patterns that mirror canonical histological organization, providing a framework for studying microstructural alterations in ...
Dayana Hayek   +13 more
wiley   +1 more source

rTCT: Rodent Triangle Completion Task to Facilitate Reverse Translational Study of Path Integration

open access: yesHippocampus, Volume 36, Issue 3, May 2026.
ABSTRACT Path integration is navigation in the absence of environmental landmarks and is a primary cognitive mechanism underlying spatial memory. Path integration performance is primarily assessed in humans using the Triangle Completion Task (TCT). In humans, TCT has shown promise for the early diagnosis of Alzheimer's disease.
Stephen Duncan   +13 more
wiley   +1 more source

Micro‐Stimulation Timing Framed Around an Averaged Theta Period of Stimulation Determines Hippocampal Recruitment in Cued Fear Conditioning

open access: yesHippocampus, Volume 36, Issue 3, May 2026.
ABSTRACT The importance of precise timing of neuronal activity, relative to ongoing slower oscillations, is reshaping the engram theory and our understanding of how memories are encoded and stored. The hippocampal theta‐wave phase‐encoding of neuronal firing predicts behavioral outcomes and cognitive performance in memory tasks.
Paula Gonçalves Vieira Teixeira   +3 more
wiley   +1 more source

Dissociable Mechanisms Underlie Differences Between Memory and Metamemory in Older Adults: The Differentiating Role of Anxiety and Depression Symptoms

open access: yesHippocampus, Volume 36, Issue 3, May 2026.
ABSTRACT The ability to remember (i.e., memory ability) and to accurately discern memory function (i.e., metamemory) are both important facets of cognition. In the present study, we examined the shared and distinct sources of variance across memory ability and metamemory using psychometrically validated measures of memory ability, metamemory, and ...
Jennifer L. Crawford   +5 more
wiley   +1 more source

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