keyword
https://read.qxmd.com/read/38547155/enhanced-amygdala-anterior-cingulate-white-matter-structural-connectivity-in-sahaja-yoga-meditators
#1
JOURNAL ARTICLE
Oscar Perez-Diaz, Daylín Góngora, José L González-Mora, Katya Rubia, Alfonso Barrós-Loscertales, Sergio Elías Hernández
OBJECTIVE: To study the white matter connections between anterior cingulate cortex, anterior insula and amygdala as key regions of the frontal-limbic network that have been related to meditation. DESIGN: Twenty experienced practitioners of Sahaja Yoga Meditation and twenty nonmeditators matched on age, gender and education level, were scanned using Diffusion Weighted Imaging, using a 3T scanner, and their white matter connectivity was compared using diffusion tensor imaging analyses...
2024: PloS One
https://read.qxmd.com/read/38547053/emergence-of-emotion-selectivity-in-deep-neural-networks-trained-to-recognize-visual-objects
#2
JOURNAL ARTICLE
Peng Liu, Ke Bo, Mingzhou Ding, Ruogu Fang
Recent neuroimaging studies have shown that the visual cortex plays an important role in representing the affective significance of visual input. The origin of these affect-specific visual representations is debated: they are intrinsic to the visual system versus they arise through reentry from frontal emotion processing structures such as the amygdala. We examined this problem by combining convolutional neural network (CNN) models of the human ventral visual cortex pre-trained on ImageNet with two datasets of affective images...
March 2024: PLoS Computational Biology
https://read.qxmd.com/read/38546705/amygdala-enlargement-in-temporal-lobe-epilepsy-histopathology-and-surgical-outcomes
#3
JOURNAL ARTICLE
Lubna Shakhatreh, Ben Sinclair, Catriona McLean, Elaine Lui, Andrew P Morokoff, James A King, Zhibin Chen, Piero Perucca, Terence J O'Brien, Patrick Kwan
OBJECTIVES: Amygdala enlargement is detected on magnetic resonance imaging (MRI) in some patients with drug-resistant temporal lobe epilepsy (TLE), but its clinical significance remains uncertain We aimed to assess if the presence of amygdala enlargement (1) predicted seizure outcome following anterior temporal lobectomy with amygdalohippocampectomy (ATL-AH) and (2) was associated with specific histopathological changes. METHODS: This was a case-control study. We included patients with drug-resistant TLE who underwent ATL-AH with and without amygdala enlargement detected on pre-operative MRI...
March 28, 2024: Epilepsia
https://read.qxmd.com/read/38544844/a-link-between-ghrelin-and-major-depressive-disorder-a-mini-review
#4
REVIEW
Michał Lis, Tymoteusz Miłuch, Maciej Majdowski, Tomasz Zawodny
Ghrelin is primarily responsible for regulating energy balance, as it increases appetite. However, in recent years, its new physiological functions have been discovered-it regulates lipogenesis, plays a role in the development of insulin resistance, and even acts protectively on heart muscle. Moreover, ghrelin was associated with many psychiatric disorders, including major depressive disorder (MDD) or schizophrenia. Ghrelin levels were elevated in patients diagnosed with depression and in patients after suicide attempts...
2024: Frontiers in Psychiatry
https://read.qxmd.com/read/38541990/ictal-bradycardia-and-asystole-in-sleep-related-hypermotor-epilepsy-a-study-of-200-patients
#5
JOURNAL ARTICLE
Lorenzo Muccioli, Giulia Bruschi, Lorenzo Ferri, Anna Scarabello, Lisa Taruffi, Lidia Di Vito, Barbara Mostacci, Federica Provini, Giovanna Calandra-Buonaura, Paolo Tinuper, Laura Licchetta, Francesca Bisulli
Background : Ictal bradycardia (IB) and asystole (IA) represent a rare but potentially harmful feature of epileptic seizures. The aim of this study was to study IB/IA in patients with sleep-related hypermotor epilepsy (SHE). Methods : We retrospectively included cases with video-EEG-confirmed SHE who attended our Institute up to January 2021. We reviewed the ictal polysomnography recordings focusing on ECG and identified cases with IB (R-R interval ≥ 2 s or a ≥10% decrease of baseline heart rate) and IA (R-R interval ≥ 4 s)...
March 19, 2024: Journal of Clinical Medicine
https://read.qxmd.com/read/38540755/exploring-the-intricacies-of-neurogenic-niches-unraveling-the-anatomy-and-neural-microenvironments
#6
REVIEW
Ismael Sánchez-Gomar, Noelia Geribaldi-Doldán, Celeste Santos-Rosendo, Ciro Sanguino-Caneva, Carlos Carrillo-Chapman, Ornella Fiorillo-Moreno, José Luis Villareal Camacho, Elkin Navarro Quiroz, Cristina Verástegui
Neurogenesis is the process of forming new neurons from neural stem cells (NSCs). In adults, this process takes place in specific areas of the brain, known as neurogenic niches. These regions have unique anatomical features that have been studied in animal models and in the human brain; however, there are differences between these models that need to be addressed. The most studied areas are the subventricular zone, the lateral and latero-dorsal walls of the lateral ventricles, and the dentate gyrus of the hippocampus (Hp), which are known as the canonical areas...
March 12, 2024: Biomolecules
https://read.qxmd.com/read/38539645/the-left-amygdala-and-right-frontoparietal-cortex-support-emotional-adaptation-aftereffects
#7
JOURNAL ARTICLE
Xinqi Su, Ruilin Fu, Huiling Li, Nan Jiang, Aqian Li, Jingyu Yang, Leilei Mei
Adaptation aftereffects-in which prolonged prior experience (adaptation) can bias the subsequent judgment of ambiguous stimuli-are a ubiquitous phenomenon. Numerous studies have found behaviorally stable adaptation aftereffects in a variety of areas. However, it is unclear which brain regions are responsible for this function, particularly in the case of high-level emotional adaptation aftereffects. To address this question, the present study used fMRI technology to investigate the neural mechanism of emotional adaptation aftereffects...
March 6, 2024: Brain Sciences
https://read.qxmd.com/read/38539061/clinicopathological-correlation-of-cerebrospinal-fluid-alpha-synuclein-seed-amplification-assay-in-a-behavioral-neurology-autopsy-cohort
#8
JOURNAL ARTICLE
Niyatee Samudra, D Luke Fischer, Steven Lenio, Argentina Lario Lago, Peter A Ljubenkov, Julio C Rojas, William W Seeley, Salvatore Spina, Adam M Staffaroni, Jonathan Tablante, Fattin Wekselman, Jennifer Lamoureux, Luis Concha-Marambio, Lea T Grinberg, Adam L Boxer, Lawren VandeVrede
INTRODUCTION: Lewy body disease (LBD) is a common primary or co-pathology in neurodegenerative syndromes. An alpha-synuclein seed amplification assay (αSyn-SAA) is clinically available, but clinical performance, especially lower sensitivity in amygdala-predominant cases, is not well understood. METHODS: Antemortem CSF from neuropathology-confirmed LBD cases was tested with αSyn-SAA (N = 56). Diagnostic performance and clinicopathological correlations were examined...
March 27, 2024: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://read.qxmd.com/read/38538771/neural-evidence-for-attentional-capture-by-salient-distractors
#9
JOURNAL ARTICLE
Rongqi Lin, Xianghong Meng, Fuyong Chen, Xinyu Li, Ole Jensen, Jan Theeuwes, Benchi Wang
Salient objects often capture our attention, serving as distractors and hindering our current goals. It remains unclear when and how salient distractors interact with our goals, and our knowledge on the neural mechanisms responsible for attentional capture is limited to a few brain regions recorded from non-human primates. Here we conducted a multivariate analysis on human intracranial signals covering most brain regions and successfully dissociated distractor-specific representations from target-arousal signals in the high-frequency (60-100 Hz) activity...
March 27, 2024: Nature Human Behaviour
https://read.qxmd.com/read/38538224/optogenetic-inhibition-of-the-cortical-efferents-to-the-locus-ceruleus-region-of-pontine-tegmentum-causes-cognitive-deficits
#10
JOURNAL ARTICLE
Eugene Dimitrov
BACKGROUND: The medial prefrontal cortex (mPFC) is synaptically coupled to locus ceruleus (LC) located in the pontine tegmentum. The LC supplies norepinephrine (NE) to most of the central nervous system (CNS) via an elaborate efferent network. NE release in the cortex and various limbic structures regulates arousal, memory processes, adaptive behavior and cognitive control. METHODS: The study investigated the role of the mPFC-LC circuit in the cognitive behavior of mice...
March 19, 2024: Journal of Integrative Neuroscience
https://read.qxmd.com/read/38538167/connections-from-the-central-amygdala-to-the-bed-nucleus-of-the-stria-terminalis-the-role-in-fear-learning
#11
JOURNAL ARTICLE
Nur Zeynep Güngör
No abstract text is available yet for this article.
April 15, 2024: Biological Psychiatry
https://read.qxmd.com/read/38537867/oxytocin-and-social-learning-in-socially-anxious-men-and-women
#12
JOURNAL ARTICLE
Aleya Flechsenhar, Seth M Levine, Laura E Müller, Sabine C Herpertz, Katja Bertsch
OBJECTIVE: This study extended a classic self-referential learning paradigm by investigating the effects of intranasally-administered oxytocin in high and low socially anxious participants during social learning, as a function of social anxiety levels and sex. METHODS: In a randomized double-blinded design, 160 participants were either given intranasal oxytocin (24 I·U.) or placebo. Subsequently, while lying in an MR scanner, participants were shown neutral faces that were paired with positively, neutrally, or negatively valenced self-referential sentences, during which we measured self-reported arousal and sympathy of the facial stimuli, pupil dilation, and changes in the brain-oxygen-level dependent signal...
March 25, 2024: Neuropharmacology
https://read.qxmd.com/read/38536818/distinct-subpopulations-of-ventral-pallidal-cholinergic-projection-neurons-encode-valence-of-olfactory-stimuli
#13
JOURNAL ARTICLE
Ronald Kim, Mala R Ananth, Niraj S Desai, Lorna W Role, David A Talmage
To better understand the function of cholinergic projection neurons in the ventral pallidum (VP), we examined behavioral responses to appetitive (APP) and aversive (AV) odors that elicited approach or avoidance, respectively. Exposure to each odor increased cFos expression and calcium signaling in VP cholinergic neurons. Activity and Cre-dependent viral vectors selectively labeled VP cholinergic neurons that were activated and reactivated in response to either APP or AV odors, but not both, identifying two non-overlapping populations of VP cholinergic neurons differentially activated by the valence of olfactory stimuli...
March 25, 2024: Cell Reports
https://read.qxmd.com/read/38534988/structural-brain-connectivity-and-treatment-improvement-in-mood-disorder
#14
JOURNAL ARTICLE
Sébastien Dam, Jean-Marie Batail, Gabriel Hadrien Robert, Dominique Drapier, Pierre Maurel, Julie Coloigner
BACKGROUND: The treatment of depressive episodes is well established, with clearly demonstrated effectiveness of antidepressants and psychotherapies. However, more than one-third of depressed patients do not respond to treatment. Identifying the brain structural basis of treatment-resistant depression could prevent useless pharmacological prescriptions, adverse events, and lost therapeutic opportunities. METHODS: Using diffusion magnetic resonance imaging, we performed structural connectivity analyses on a cohort of 154 patients with mood disorder (MD) - and 77 sex- and age-matched healthy control (HC) participants...
March 27, 2024: Brain Connectivity
https://read.qxmd.com/read/38534426/effects-of-aging-and-nerve-growth-factor-on-neuropeptide-expression-and-cholinergic-innervation-of-the-rat-basolateral-amygdala
#15
JOURNAL ARTICLE
Pedro A Pereira, Marta Tavares, Miguel Laires, Bárbara Mota, Maria Dulce Madeira, Manuel M Paula-Barbosa, Armando Cardoso
The basolateral amygdala (BLA) contains interneurons that express neuropeptide Y (NPY) and vasoactive intestinal polypeptide (VIP), both of which are involved in the regulation of functions and behaviors that undergo deterioration with aging. There is considerable evidence that, in some brain areas, the expression of NPY and VIP might be modulated by acetylcholine. Importantly, the BLA is one of the brain regions that has one of the densest cholinergic innervations, which arise mainly from the basal forebrain cholinergic neurons...
February 28, 2024: Biology
https://read.qxmd.com/read/38533783/brain-morphometry-in-former-american-football-players-findings-from-the-diagnose-cte-research-project
#16
JOURNAL ARTICLE
Hector Arciniega, Zachary H Baucom, Fatima Tuz-Zahra, Yorghos Tripodis, Omar John, Holly Carrington, Nicholas Kim, Evdokiya E Knyazhanskaya, Leonard B Jung, Katherine Breedlove, Tim L T Wiegand, Daniel H Daneshvar, R Jarrett Rushmore, Tashrif Billah, Ofer Pasternak, Michael J Coleman, Charles H Adler, Charles Bernick, Laura J Balcer, Michael L Alosco, Inga K Koerte, Alexander P Lin, Jeffrey L Cummings, Eric M Reiman, Robert A Stern, Martha E Shenton, Sylvain Bouix
Exposure to repetitive head impacts (RHIs) in contact sports is associated with neurodegenerative disorders including chronic traumatic encephalopathy (CTE) which currently can be diagnosed only at postmortem. American football players are at higher risk of developing CTE given their exposure to RHIs. One promising approach for diagnosing CTE in vivo is to explore known neuropathological abnormalities at postmortem in living individuals using structural magnetic resonance imaging (MRI). MRI brain morphometry was evaluated in 170 male former American football players ages 45-74 years (n = 114 professional; n = 56 college) and 54 same-age unexposed asymptomatic male controls (n = 58 age range 45-74)...
March 27, 2024: Brain
https://read.qxmd.com/read/38532986/a-theory-of-the-neural-mechanisms-underlying-negative-cognitive-bias-in-major-depression
#17
JOURNAL ARTICLE
Yuyue Jiang
The widely acknowledged cognitive theory of depression, developed by Aaron Beck, focused on biased information processing that emphasizes the negative aspects of affective and conceptual information. Current attempts to discover the neurological mechanism underlying such cognitive and affective bias have successfully identified various brain regions associated with severally biased functions such as emotion, attention, rumination, and inhibition control. However, the neurobiological mechanisms of how individuals in depression develop this selective processing toward negative is still under question...
2024: Frontiers in Psychiatry
https://read.qxmd.com/read/38531908/association-between-mammillary-body-atrophy-and-memory-impairment-in-retired-athletes-with-a-history-of-repetitive-mild-traumatic-brain-injury
#18
JOURNAL ARTICLE
Mari Miyata, Keisuke Takahata, Yasunori Sano, Yasuharu Yamamoto, Shin Kurose, Manabu Kubota, Hironobu Endo, Kiwamu Matsuoka, Kenji Tagai, Masaki Oya, Kosei Hirata, Fumie Saito, Masaru Mimura, Koji Kamagata, Shigeki Aoki, Makoto Higuchi
Cognitive dysfunction, especially memory impairment, is a typical clinical feature of long-term symptoms caused by repetitive mild traumatic brain injury (rmTBI). The current study aims to investigate the relationship between regional brain atrophy and cognitive impairments in retired athletes with a long history of rmTBI. Overall, 27 retired athletes with a history of rmTBI (18 boxers, 3 kickboxers, 2 wrestlers, and 4 others; rmTBI group) and 23 age/sex-matched healthy participants (control group) were enrolled...
March 26, 2024: Scientific Reports
https://read.qxmd.com/read/38531856/alterations-in-subcortical-magnetic-susceptibility-and-disease-specific-relationship-with-brain-volume-in-major-depressive-disorder-and-schizophrenia
#19
JOURNAL ARTICLE
Shuhei Shibukawa, Hirohito Kan, Shiori Honda, Masataka Wada, Ryosuke Tarumi, Sakiko Tsugawa, Yui Tobari, Norihide Maikusa, Masaru Mimura, Hiroyuki Uchida, Yuko Nakamura, Shinichiro Nakajima, Yoshihiro Noda, Shinsuke Koike
Quantitative susceptibility mapping is a magnetic resonance imaging technique that measures brain tissues' magnetic susceptibility, including iron deposition and myelination. This study examines the relationship between subcortical volume and magnetic susceptibility and determines specific differences in these measures among patients with major depressive disorder (MDD), patients with schizophrenia, and healthy controls (HCs). This was a cross-sectional study. Sex- and age- matched patients with MDD (n = 49), patients with schizophrenia (n = 24), and HCs (n = 50) were included...
March 26, 2024: Translational Psychiatry
https://read.qxmd.com/read/38531633/ultrahigh-field-fmri-reveals-different-roles-of-temporal-and-fronto-parietal-cortices-in-subjective-awareness
#20
JOURNAL ARTICLE
Marta Poyo Solanas, Minye Zhan, Beatrice de Gelder
A central question in consciousness theories is whether one is dealing with a dichotomous ("all-or-none") or a gradual phenomenon. In this 7T fMRI study we investigated whether dichotomy or gradualness in fact depends on the brain region associated with perceptual awareness reports. Both male and female human subjects performed an emotion discrimination task (fear vs neutral bodies) presented under continuous flash suppression with trial-based perceptual awareness measures. Behaviorally, recognition sensitivity increased linearly with increased stimuli awareness and was at chance level during perceptual unawareness...
March 26, 2024: Journal of Neuroscience
keyword
keyword
14458
1
2
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.