Results 91 to 100 of about 22,462 (202)

Hippocampal Subfield Volumetry and Navigation in Congenital Blindness

Hippocampus, Volume 36, Issue 5, September 2026.
ABSTRACT The hippocampus is essential for efficient navigation. Although lack of visual experience from birth induces volumetric and structural modifications to the hippocampus, tactile and auditory navigation remain partially preserved in congenitally blind (CB) individuals.
Daniel‐Robert Chebat, Fabien C. Schneider, Ron Kupers, Maurice Ptito   +3 more
wiley   +1 more source

Distribution of calcium-binding proteins immunoreactivity in the bottlenose dolphin entorhinal cortex

Frontiers in Neuroanatomy
IntroductionThe entorhinal cortex has been shown to be involved in high-level cognitive functions in terrestrial mammals. It can be divided into two main areas: the lateral entorhinal area (LEA) and the medial entorhinal area (MEA).
Jean-Marie Graïc, Annamaria Grandis, Simona Sacchini, Claudio Tagliavia, Giulia Salamanca, Bruno Cozzi, Cristiano Bombardi   +6 more
doaj   +1 more source

Olfactory Bulb Volume Reflects Olfactory Dysfunction and Network Organization: Insights From the Population‐Based Rhineland Study

International Forum of Allergy &Rhinology, Volume 16, Issue 8, Page 809-819, August 2026.
ABSTRACT Background Olfactory dysfunction is common in aging and an early symptom of neurodegenerative diseases, but how structural (olfactory bulb [OB] volume) and functional (olfactory network [OFN] functional connectivity [FC]) brain features interact to shape odor identification ability remains unclear.
Weiyi Zeng, Konstantinos Melas, Santiago Estrada, N. Ahmad Aziz, Monique M. B. Breteler   +4 more
wiley   +1 more source

Lower cardiac output is a risk factor for faster cerebral atrophy over a 11‐year follow‐up period in APOE‐ε4 carriers

Alzheimer's &Dementia, Volume 22, Issue 8, August 2026.
Abstract INTRODUCTION Subclinical lower cardiac output (volume of blood pumped per minute) cross‐sectionally relates to smaller cerebral gray matter volumes in older adults. This study relates cardiac output to longitudinal gray matter volumes among middle‐aged and older adults over an 11‐year period.
Elizabeth E. Moore, Panpan Zhang, Omair A. Khan, Dandan Liu, Deepak K. Gupta, Kimberly R. Pechman, Katherine A. Gifford, Bennett A. Landman, Timothy J. Hohman, Angela L. Jefferson   +9 more
wiley   +1 more source

BOLD fMRI activations and LC contrast associated with successful episodic memory in healthy older adults and MCI

Alzheimer's &Dementia, Volume 22, Issue 8, August 2026.
Abstract INTRODUCTION We examined whether locus coeruleus (LC) contrast, an indirect proxy for neuronal density and structural health, was related to delayed episodic memory in healthy older adults (OAs) and those with mild cognitive impairment (MCI) and its association with encoding‐related brain activity, controlling for emotional salience.
Lucia Penalba‐Sánchez, Yeo‐Jin Yi, Elif Kurt, Grazia Daniela Femminella, Clare Loane, Millie Duckett, Alina Zhunussova, Nikolaus Weiskopf, Martina F Callaghan, Ray Dolan, Robert J Howard, Emrah Düzel, Dorothea Hämmerer   +12 more
wiley   +1 more source

Spatiotemporally random and diverse grid cell spike patterns contribute to the transformation of grid cell to place cell in a neural network model.

PLoS ONE, 2019
The medial entorhinal cortex and the hippocampus are brain regions specialized in spatial information processing. While an animal navigates around an environment, grid cells in the medial entorhinal cortex spike at multiple discrete locations, forming ...
Sahn Woo Park, Hyun Jae Jang, Mincheol Kim, Jeehyun Kwag   +3 more
doaj   +1 more source

miR155, triplicated in Down syndrome, regulates the development of neural stem cells and GABAergic interneurons in Alzheimer's disease mouse and human iPSC models

Alzheimer's &Dementia, Volume 22, Issue 8, August 2026.
Abstract INTRODUCTION Dysfunctional microRNAs and GABAergic interneurons are features of Alzheimer's disease (AD). The role of neuronal microRNA155 (miR155), elevated in both AD and Down syndrome (DS), remains unknown. METHODS We utilized in silico analyses of published databases, MIR155‐deleted and ‐overexpressing human induced pluripotent stem cell ...
Xiaodong Zhu, Jean‐Vianney Haure‐Mirande, Mesude Bicak, Pengfei Dong, Ilya Kruglikov, Aiqun Li, Aisha Al‐subaie, Valentina Fossati, Scott Noggle, Sam Gandy, Michelle E. Ehrlich   +10 more
wiley   +1 more source

Diffusion imaging markers of accelerated aging of the lower cingulum in subjective cognitive decline

Frontiers in Neurology
IntroductionAlzheimer’s Disease (AD) typically starts in the medial temporal lobe, then develops into a neurodegenerative cascade which spreads to other brain regions.
Ryn Flaherty, Ryn Flaherty, Yu Veronica Sui, Arjun V. Masurkar, Arjun V. Masurkar, Rebecca A. Betensky, Henry Rusinek, Henry Rusinek, Mariana Lazar   +8 more
doaj   +1 more source

GluK2-mediated excitability within the superficial layers of the entorhinal cortex.

PLoS ONE, 2009
Recent analysis of genetically modified mice deficient in different kainate receptor (KAR) subunits have strongly pointed to a role of the GluK2 subunit, mediating the vulnerability of the brain towards seizures.
Prateep S Beed, Benedikt Salmen, Dietmar Schmitz   +2 more
doaj   +1 more source

Astrocyte reactivity modifies the effects of locus coeruleus norepinephrine‐related dysfunction on tau and its impact on cognition

Alzheimer's &Dementia, Volume 22, Issue 8, August 2026.
Abstract INTRODUCTION Animal models demonstrated that pharmacologically‐induced lesioning of the locus coeruleus (LC), the brain's primary source of norepinephrine, triggered astrocyte reactivity, exacerbating Alzheimer's disease (AD) pathology and cognitive deficits.
Prokopis C. Prokopiou, Maxime Van Egroo, Joost M. Riphagen, Marion Baillet, Nicholas J. Ashton, Shorena Janelidze, Reisa A. Sperling, Keith A. Johnson, Kaj Blennow, Oskar Hansson, Henrik Zetterberg, Heidi I. L. Jacobs   +11 more
wiley   +1 more source