1,046 results match your criteria: "Barnard College.[Affiliation]"

Prophylactic (R,S)-ketamine and (2S,6S)-hydroxynorketamine Decrease Fear Expression by Differentially Modulating Fear Neural Ensembles.

Biol Psychiatry

October 2024

Department of Psychiatry, Columbia University Irving Medical Center, New York, New York; Division of Systems Neuroscience, Area Neuroscience, Research Foundation for Mental Hygiene, Inc./New York State Psychiatric Institute, New York, New York. Electronic address:

Article Synopsis
  • Previous research has shown that both (R,S)-ketamine and its metabolite (2S,6S)-HNK can reduce learned fear in mice when administered before experiencing stress.
  • A study involved injecting mice with these compounds and then assessing neural activity related to fear after a fear conditioning task.
  • The findings suggest that both drugs affect different neural pathways associated with fear and could lead to new methods for treating fear-related disorders by targeting specific brain areas.
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We introduce the Visual Experience Dataset (VEDB), a compilation of more than 240 hours of egocentric video combined with gaze- and head-tracking data that offer an unprecedented view of the visual world as experienced by human observers. The dataset consists of 717 sessions, recorded by 56 observers ranging from 7 to 46 years of age. This article outlines the data collection, processing, and labeling protocols undertaken to ensure a representative sample and discusses the potential sources of error or bias within the dataset.

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Sex-Specific Effects of Anxiety on Cognition and Activity-Dependent Neural Networks: Insights From (Female) Mice and (Wo)men.

Biol Psychiatry

September 2024

Division of Systems Neuroscience, Research Foundation for Mental Hygiene, Inc. (RFMH)/New York State Psychiatric Institute (NYSPI), New York, New York; Department of Psychiatry, Columbia University Irving Medical Center (CUIMC), New York, New York. Electronic address:

Background: Neuropsychiatric symptoms, such as depression and anxiety, are observed in 90% of patients with Alzheimer's disease (AD), two-thirds of whom are women. Neuropsychiatric symptoms usually manifest long before AD onset creating a therapeutic opportunity. Here, we examined the impact of anxiety on AD progression and the underlying brainwide neuronal mechanisms.

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Physiological synchrony-or similarity between two people's physiological responses-is thought to have important consequences for health and well-being and has been observed in social relationship contexts. The present study investigated variability in dyads' physiological synchrony as a function of both partners' behaviors during an emotionally salient discussion. We examined concurrent covariation in cardiac interbeat intervals in a sample of young adult romantic couples ( = 79 dyads) who discussed the coordination of a personal goal with the future of their relationship (data collected from 2013 to 2015).

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High Impostors Are More Hesitant to Ask for Help.

Behav Sci (Basel)

September 2024

Department of Psychology, Barnard College, Columbia University, New York, NY 10027, USA.

Article Synopsis
  • Help-seeking behavior involves metacognitive monitoring (realizing you need help) and control (acting on that realization), and difficulties in seeking help can indicate an awareness issue.* -
  • The study investigated how impostorism, the feeling of being a "fraud," affects students' willingness to ask for help when tackling reasoning problems.* -
  • Results showed students were more likely to seek help for math problems, and those with higher impostorism scores were less likely to ask for help, especially with more difficult subjects.*
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Schizophrenia is a neuropsychiatric disorder with postulated neurodevelopmental etiology. Genetic and imaging studies have shown enhanced dopamine and D2 receptor occupancy in the striatum of patients with schizophrenia. However, whether alterations in postnatal striatal dopamine can lead to long-lasting changes in brain function and behavior is still unclear.

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Neural variability, or variation in brain signals, facilitates dynamic brain responses to ongoing demands. This flexibility is important during development from childhood to young adulthood, a period characterized by rapid changes in experience. However, little is known about how variability in the engagement of recurring brain states changes during development.

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Contemporary theories guiding the search for neural mechanisms of learning and memory assume that associative learning results from the temporal pairing of cues and reinforcers resulting in coincident activation of associated neurons, strengthening their synaptic connection. While enduring, this framework has limitations: Temporal pairing-based models of learning do not fit with many experimental observations and cannot be used to make quantitative predictions about behavior. Here, we present behavioral data that support an alternative, information-theoretic conception: The amount of information that cues provide about the timing of reward delivery predicts behavior.

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Background: Standard antidepressant treatments often take weeks to reach efficacy and are ineffective for many patients. (R,S)-ketamine, an N-methyl-D-aspartate (NMDA) receptor antagonist, has been shown to be a rapid-acting antidepressant and to decrease depressive symptoms within hours of administration. While previous studies have shown the importance of the GluN2B subunit of the NMDA receptor on interneurons in the medial prefrontal cortex, no study to our knowledge has investigated the influence of GluN2B-expressing adult-born granule cells.

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Article Synopsis
  • Research highlights a critical gap in understanding long COVID (PASC) in children and emphasizes the need for studies that define its characteristics in this age group.
  • The objective is to identify common prolonged symptoms in children aged 6 to 17 post-SARS-CoV-2 infection, examining differences between school-age kids and adolescents, as well as potential symptom clusters for future research.
  • A multicenter study involved nearly 5,000 participants, revealing that certain symptoms were significantly more prevalent in those with a history of COVID-19 compared to those without.
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Communicating the scientific consensus that human-caused climate change is real increases climate change beliefs, worry and support for public action in the United States. In this preregistered experiment, we tested two scientific consensus messages, a classic message on the reality of human-caused climate change and an updated message additionally emphasizing scientific agreement that climate change is a crisis. Across online convenience samples from 27 countries (n = 10,527), the classic message substantially reduces misperceptions (d = 0.

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Introduction: Violence against women is a prevalent, preventable public health crisis. COVID-19 stressors and pandemic countermeasures may have exacerbated violence against women. Cisgender college women are particularly vulnerable to violence.

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Rats can condition cephalic-phase insulin responses (CPIRs) to specific sounds or times of the day that predict food availability. The present study asked whether mice can condition a CPIR to the flavor of sapid solutions that produce postoral glucose stimulation. To this end, we subjected C57BL/6 mice to one of six experimental protocols.

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Some mental health problems such as depression and anxiety are more common in females, while others such as autism and attention deficit/hyperactivity (AD/H) are more common in males. However, the neurobiological origins of these sex differences are poorly understood. Animal studies have shown substantial sex differences in neuronal and glial cell structure, while human brain imaging studies have shown only small differences, which largely reflect overall body and brain size.

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Heme b (iron protoporphyrin IX) is an essential but potentially cytotoxic cofactor, signaling molecule, and nutritional source of iron. Its importance in cell biology and metabolism is underscored by the fact that numerous diseases, including various cancers, neurodegenerative disorders, infectious diseases, anemias, and porphyrias, are associated with the dysregulation of heme synthesis, degradation, trafficking, and/or transport. Consequently, methods to measure, image, and quantify heme in cells are required to better understand the physiology and pathophysiology of heme.

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Reading Reshapes Stimulus Selectivity in the Visual Word Form Area.

eNeuro

July 2024

Department of Neuroscience & Behavior, Barnard College, Columbia University, New York, New York 10027.

Reading depends on a brain region known as the "visual word form area" (VWFA) in the left ventral occipitotemporal cortex. This region's function is debated because its stimulus selectivity is not absolute, it is modulated by a variety of task demands, and it is inconsistently localized. We used fMRI to characterize the combination of sensory and cognitive factors that activate word-responsive regions that we precisely localized in 16 adult humans (4 male).

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The role of maternal and child healthcare providers in identifying and supporting perinatal mental health disorders.

PLoS One

July 2024

Social Work Program, School of Social Science and Human Services, Ramapo College, Mahwah, New Jersey, United States of America.

Background: Perinatal depression (PND) is underdiagnosed in the clinical setting. This study explores the role of obstetricians, and other primary care providers of maternal and child healthcare in detecting, screening, and referring women during the perinatal period identified as depressed, anxious, or exhibiting other symptoms of mental health disorders.

Method: Information was gathered from obstetricians (n = 16), and other primary care providers (pediatricians, nurse practitioners, physician assistants) (n = 85), on identifying and supporting childbearing women with symptoms of perinatal depression using an online survey.

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Urban street trees offer cities critical environmental and social benefits. In New York City (NYC), a decadal census of every street tree is conducted to help understand and manage the urban forest. However, it has previously been impossible to analyze growth of an individual tree because of uncertainty in tree location.

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DDX3X syndrome: From clinical phenotypes to biological insights.

J Neurochem

September 2024

Seaver Autism Center for Research and Treatment, Icahn School of Medicine at Mount Sinai, New York City, New York, USA.

DDX3X syndrome is a neurodevelopmental disorder accounting for up to 3% of cases of intellectual disability (ID) and affecting primarily females. Individuals diagnosed with DDX3X syndrome can also present with behavioral challenges, motor delays and movement disorders, epilepsy, and congenital malformations. DDX3X syndrome is caused by mutations in the X-linked gene DDX3X, which encodes a DEAD-box RNA helicase with critical roles in RNA metabolism, including mRNA translation.

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We report an electrochemical method for doping two-dimensional (2D) superatomic semiconductor ReSeCl that significantly improves the material's electrical transport while retaining the in-plane and stacking structures. The electrochemical reduction induces the complete dissociation of chloride anions from the surface of each superatomic nanosheet. After the material is dehalogenated, we observe the electrical conductivity () increases by two orders of magnitude while the 3D electron carrier density () increases by three orders of magnitude.

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