Dopamine in fear extinction

XI Salinas-Hernández, S Duvarci - Frontiers in synaptic neuroscience, 2021 - frontiersin.org
The ability to extinguish fear memories when threats are no longer present is critical for
adaptive behavior. Fear extinction represents a new learning process that eventually leads …

A dopaminergic basis for fear extinction

R Kalisch, AMV Gerlicher, S Duvarci - Trends in cognitive sciences, 2019 - cell.com
It is a joyous relief when an event we dread fails to materialize. In fear extinction, the
appetitive nature of an omitted aversive event is not a mere epiphenomenon but drives the …

Investigating the role of dopamine receptor-and parvalbumin-expressing cells in extinction of conditioned fear

HB Madsen, AA Guerin, JH Kim - Neurobiology of Learning and Memory, 2017 - Elsevier
The present study examined the pattern of activation of neurons that express dopamine
receptors 1 and 2 (D1R and D2R), and parvalbumin (PV) in mice that underwent extinction …

Dopamine-dependent prefrontal reactivations explain long-term benefit of fear extinction

AMV Gerlicher, O Tüscher, R Kalisch - Nature communications, 2018 - nature.com
Fear extinction does not prevent post-traumatic stress or have long-term therapeutic benefits
in fear-related disorders unless extinction memories are easily retrieved at later encounters …

The learning of fear extinction

C Furini, J Myskiw, I Izquierdo - Neuroscience & Biobehavioral Reviews, 2014 - Elsevier
Recent work on the extinction of fear-motivated learning places emphasis on its putative
circuitry and on its modulation. Extinction is the learned inhibition of retrieval of previously …

Unrelenting fear under stress: neural circuits and mechanisms for the immediate extinction deficit

S Maren - Frontiers in Systems Neuroscience, 2022 - frontiersin.org
Therapeutic interventions for disorders of fear and anxiety rely on behavioral approaches
that reduce pathological fear memories. For example, learning that threat-predictive stimuli …

Dopamine neurons drive fear extinction learning by signaling the omission of expected aversive outcomes

XI Salinas-Hernández, P Vogel, S Betz, R Kalisch… - Elife, 2018 - elifesciences.org
Extinction of fear responses is critical for adaptive behavior and deficits in this form of safety
learning are hallmark of anxiety disorders. However, the neuronal mechanisms that initiate …

Prefrontal dopamine regulates fear reinstatement through the downregulation of extinction circuits

N Hitora-Imamura, Y Miura, C Teshirogi, Y Ikegaya… - Elife, 2015 - elifesciences.org
Prevention of relapses is a major challenge in treating anxiety disorders. Fear reinstatement
can cause relapse in spite of successful fear reduction through extinction-based exposure …

A dopaminergic switch for fear to safety transitions

R Luo, A Uematsu, A Weitemier, L Aquili… - Nature …, 2018 - nature.com
Overcoming aversive emotional memories requires neural systems that detect when fear
responses are no longer appropriate so that they can be extinguished. The midbrain ventral …

Enhancing dopaminergic signaling and histone acetylation promotes long-term rescue of deficient fear extinction

N Whittle, V Maurer, C Murphy, J Rainer… - Translational …, 2016 - nature.com
Extinction-based exposure therapy is used to treat anxiety-and trauma-related disorders;
however, there is the need to improve its limited efficacy in individuals with impaired fear …