Adult hippocampal neurogenesis, fear generalization, and stress

A Besnard, A Sahay - Neuropsychopharmacology, 2016 - nature.com
The generalization of fear is an adaptive, behavioral, and physiological response to the
likelihood of threat in the environment. In contrast, the overgeneralization of fear, a cardinal …

Single-cell activity and network properties of dorsal raphe nucleus serotonin neurons during emotionally salient behaviors

GE Paquelet, K Carrion, CO Lacefield, P Zhou, R Hen… - Neuron, 2022 - cell.com
The serotonin system modulates a wide variety of emotional behaviors and states, including
reward processing, anxiety, and social interaction. To reveal the underlying patterns of …

Post-traumatic stress disorder: the relationship between the fear response and chronic stress

LY Maeng, MR Milad - Chronic Stress, 2017 - journals.sagepub.com
Post-traumatic stress disorder (PTSD) is a disabling psychiatric condition that can develop
following a physical, psychological, or sexual trauma. Despite the growing body of literature …

Amygdala-hippocampal dynamics during salient information processing

J Zheng, KL Anderson, SL Leal, A Shestyuk… - Nature …, 2017 - nature.com
Recognizing motivationally salient information is critical to guiding behaviour. The amygdala
and hippocampus are thought to support this operation, but the circuit-level mechanism of …

Dorsolateral septum somatostatin interneurons gate mobility to calibrate context-specific behavioral fear responses

A Besnard, Y Gao, M TaeWoo Kim, H Twarkowski… - Nature …, 2019 - nature.com
Adaptive fear responses to external threats rely upon efficient relay of computations
underlying contextual encoding to subcortical circuits. Brain-wide analysis of highly …

Intracranial human recordings reveal association between neural activity and perceived intensity for the pain of others in the insula

E Soyman, R Bruls, K Ioumpa, L Müller-Pinzler, S Gallo… - Elife, 2022 - elifesciences.org
Based on neuroimaging data, the insula is considered important for people to empathize
with the pain of others. Here, we present intracranial electroencephalographic (iEEG) …

Prediction of learned resistance or helplessness by hippocampal-prefrontal cortical network activity during stress

DB Marques, RN Ruggiero… - Journal of …, 2022 - Soc Neuroscience
The perception of control over a stressful experience may determine its impacts and
generate resistance against future stressors. Although the medial prefrontal cortex (PFC) …

Endocannabinoid release at ventral hippocampal-amygdala synapses regulates stress-induced behavioral adaptation

V Kondev, M Najeed, F Yasmin, A Morgan, N Loomba… - Cell reports, 2023 - cell.com
The endocannabinoid (eCB) system is a key modulator of glutamate release within limbic
neurocircuitry and thus heavily modulates stress responsivity and adaptation. The ventral …

Fear extinction recall modulates human frontomedial theta and amygdala activity

MFJ Sperl, C Panitz, IM Rosso, DG Dillon… - Cerebral …, 2019 - academic.oup.com
Human functional magnetic resonance imaging (fMRI) and electroencephalography (EEG)
studies, as well as animal studies, indicate that the amygdala and frontomedial brain regions …

Basolateral amygdala inputs to the medial entorhinal cortex selectively modulate the consolidation of spatial and contextual learning

KL Wahlstrom, ML Huff, EB Emmons… - Journal of …, 2018 - Soc Neuroscience
Although evidence suggests that the basolateral amygdala (BLA) and dorsal hippocampus
(DH) work together to influence the consolidation of spatial/contextual learning, the circuit …