Results 71 to 80 of about 497,866 (292)

Odor induced functional connectivity alteration of POC-anterior frontal cortex-medial temporal cortex in patients with mild cognitive impairment

Frontiers in Aging Neuroscience
BackgroundMild cognitive impairment (MCI) is associated with an increased risk of dementia in older adults. Olfactory impairment may indicate prodromal dementia, yet its underlying mechanisms are not fully understood.
Weiping Li, Jianan Zhou, Shuying Li, Min Wu, Yajing Zhu, Qian Chen, Futao Chen, Xuefeng Ma, Xin Zhang, Zhengge Wang, Jiaming Lu, Bing Zhang, Bing Zhang, Bing Zhang, Bing Zhang, Bing Zhang, Bing Zhang, Bing Zhang   +17 more
doaj   +1 more source

Hippocampus and Parahippocampus Volume Reduction Associated With Impaired Olfactory Abilities in Subjects Without Evidence of Cognitive Decline

Frontiers in Human Neuroscience, 2020
The aim of this study was to investigate the relationship between olfactory recognition and morphological changes in olfactory brain regions including the amygdala, hippocampus, rectus, parahippocampus, orbitofrontal cortex, and medial frontal cortex in ...
Satomi Kubota, Satomi Kubota, Yuri Masaoka, Haruko Sugiyama, Masaki Yoshida, Akira Yoshikawa, Nobuyoshi Koiwa, Motoyasu Honma, Ryuta Kinno, Keiko Watanabe, Natsuko Iizuka, Natsuko Iizuka, Masahiro Ida, Kenjiro Ono, Masahiko Izumizaki   +14 more
doaj   +1 more source

Modulation of Olfactory Perception by Visual Cortex Stimulation [PDF]

The Journal of Neuroscience, 2012
When attempting to identify an object based on smell alone, people often visualize the perceived source of the odorant. This close association between olfactory and visual functions is supported by neuroimaging studies demonstrating activation of visual cortex during performance of purely olfactory tasks.
Jahan B, Jadauji, Jelena, Djordjevic, Johan N, Lundström, Christopher C, Pack   +3 more
openaire   +2 more sources

Gain Control and Sparse Representations in the Olfactory System of the Locust and Fly [PDF]

, 2010
The giant GABAergic neuron (GGN) is a single, paired, non-spiking neuron that arborizes extensively in the mushroom body (MB) of the locust (Leitch and Laurent, 1996), where it overlaps with the dendrites and the axons of Kenyon cells (KCs).
Papadopoulou, Maria
core   +1 more source

Gestational Hypoxia Disrupts Medial Ganglionic Eminence Progenitor Dynamics and Interneuron Development in Schizophrenia

Advanced Science, EarlyView.
FES‐derived MGE spheroids exhibit progenitor‐stage alterations in developmental trajectory and hypoxia‐responsive transcriptional programs, followed by functional disruption. Gestational hypoxia recapitulates impaired progenitor proliferation, shortened cell‐cycle progression, interneuron developmental abnormalities, and schizophrenia‐like behaviors in
Peiyan Ni, Qiancheng Zhang, Youhui Jiang, Huiying Yao, Chuqing Zhou, Xiaoyi Tian, Shiyingnan Gao, Jun Zhao, Xinyi Ren, Naxin Xu, Mengshan Fu, Liansheng Zhao, Xueyu Qi, Xueli Yu, Wanjun Guo, Sangmi Chung, Fan Guo, Tao Li   +17 more
wiley   +1 more source

Neural Changes in Patients with Post-Traumatic Anosmia: Insights from Resting-State fMRI [PDF]

Journal of Biomedical Physics and Engineering
Background: Functional Magnetic Resonance Imaging (fMRI) is a powerful modality for investigating changes in healthy brains and those with disorders.
Abolhasan Rezaeyan, Fatemeh Shahi Moridi, Seyed Kamran Kamrava, Mohammad Bagher Shiran, Arash Zare-Sadeghi   +4 more
doaj   +1 more source

SemanticST: A Scalable Multi‐Contextual Graph Learning Framework for Uncovering Spatial Niches and Robust Multi‐Sample Integration in Spatial Transcriptomics

Advanced Science, EarlyView.
Technical limitations often let dominant signals overshadow rare cell types and fine‐grained heterogeneity in spatial transcriptomics. SemanticST, a graph neural network using multi‐semantic graph fusion and a novel min‐cut loss, recovers these subtle patterns.
Roxana Zahedi, Ahmadreza Argha, Nona Farbehi, Ivan Bakhshayeshi, Thantrira Porntaveetus, Youqiong Ye, Nigel H. Lovell, Hamid Alinejad‐Rokny   +7 more
wiley   +1 more source

Orientation in space using the sense of smell [PDF]

, 2010
Several studies reported that respiration interacts with olfactory perception. Therefore, in the pilot study of this experiment series human breathing was investigated during an olfactory experiment.
Kleemann, Anna Maria
core   +1 more source

Input-specific excitation of olfactory cortex microcircuits [PDF]

Frontiers in Neural Circuits, 2012
Every higher-order association cortex receives a variety of synaptic signals from different regions of the brain. How these cortical networks are capable of differentially responding to these various extrinsic synaptic inputs remains unclear. To address this issue, we studied how the basolateral amygdala (BLA) and the anterior piriform cortex (aPC ...
Luna, Victor M., Morozov, Alexei
openaire   +3 more sources

Olfactory Cortex Generates Synchronized Top-Down Inputs to the Olfactory Bulb during Slow-Wave Sleep

, 2011
The olfactory cortex is functionally isolated from the external odor world during slow-wave sleep. However, the neuronal activity pattern in the olfactory cortex and its functional roles during slow-wave sleep are not well understood.
Kensaku Mori, Hiroyuki Manabe, Ikue Kusumoto-Yoshida, Mizuho Ota   +3 more
core   +1 more source