Tag: <span>Dopamine</span>

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What happens to the dopamine system when we experience aversive events?
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What happens to the dopamine system when we experience aversive events?

by Netherlands Institute for Neuroscience  White noise (WN) is an aversive stimulus that lowers dopamine concentration in the nucleus accumbens core (NAC). (A) Left: example trajectory of a rat in the real-time place aversion test (30 min), in which entry into one quadrant (shaded), which was randomly determined prior to the session, led to 90...

Study unveils a global dysregulation of dopamine in mice with chronic inflammatory pain
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Study unveils a global dysregulation of dopamine in mice with chronic inflammatory pain

by Ingrid Fadelli , Medical Xpress Microscopic image of the anterior cingulate cortex (ACC) used for the current experiment. The black lines are the stimulation electrodes that were used to evoke synaptic responses, while the white lines show the placement of the recording electrode that monitored the activity of the neurons. Image credit: Soroush Darvish-Ghane....

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Dopamine makes you feel happy. But we probably have to be rewrite the textbooks

UNIVERSITY OF COPENHAGEN – THE FACULTY OF HEALTH AND MEDICAL SCIENCES “The textbooks probably have to be rewritten now.” Professor Claus Juul Løland from the Department of Neuroscience at the University of Copenhagen feels quite certain. A team of researchers headed by Claus Juul Løland has just published a study in the esteemed journal Nature Communications. The...

Dopamine found to be an initiator of REM sleep
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Dopamine found to be an initiator of REM sleep

by Bob Yirka, Medical Xpress NE and 5HT levels in BLA start to decrease before NREM to REM sleep transition. Levels of NA and 5HT in the BLA showed a completely different pattern from that of DA. They were decreased during NREM sleep and started to further decrease just shortly prior to transition to REM...

Dopamine agonists and dopamine reuptake inhibitors provide similar quality of life for Parkinson disease patients
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Dopamine agonists and dopamine reuptake inhibitors provide similar quality of life for Parkinson disease patients

For patients with Parkinson disease on levodopa therapy, patient-rated quality of life is similar for those receiving adjuvant therapy with dopamine agonists compared with dopamine reuptake inhibitors (DRIs); and among DRIs, monoamine oxidase type B (MAO-B) inhibitors are preferable to catechol-O-methyltransferase (COMT) inhibitors, according to a study published online Dec. 28 in JAMA Neurology. Richard Gray,...

Expectations and Dopamine Can Affect Outcome of SSRI Antidepressant Treatment
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Expectations and Dopamine Can Affect Outcome of SSRI Antidepressant Treatment

Summary: The placebo effect combined with dopamine levels can determine whether symptoms of depression and social anxiety will improve in patients prescribed SSRI antidepressants. Researchers found the positive effect of the medications was four times higher in patients with high expectations the treatment would work compared to those with lower expectations. Source: Uppsala University Levels of dopamine...

Dopamine’s many roles, explained
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Dopamine’s many roles, explained

ROCKEFELLER UNIVERSITY VIDEO: RESEARCHERS RECORD THE ACTIVITY OF NEURONS IN THE BRAIN’S OLFACTORY LEARNING CENTER (BOTTOM), AS THE FLY RECEIVES A DROP OF SUCROSE. CREDIT: LABORATORY OF NEUROPHYSIOLOGY AND BEHAVIOR AT THE ROCKEFELLER UNIVERSITY Among the neurotransmitters in the brain, dopamine has gained an almost mythical status. Decades of research have established its contribution to...

Role of dopamine in consciousness
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Role of dopamine in consciousness

by Barbara Jacquelyn Sahakian, Christelle Langley, Emmanuel A Stamatakis, Lennart Spindler,  The Conversation We know very little about the human brain. Credit: Orla/Shutterstock Consciousness is arguably the most important scientific topic there is. Without consciousness, there would after all be no science. But while we all know what it is like to be conscious—meaning that we...