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Hyperacusis may be defined as diminishing tolerance to moderate and high intensity sounds in people with normal hearing sensitivity. Serotonin plays a critical role in some of auditory tasks including startle reflex and prepulse inhibition. Serotonin deficiency can cause some diseases which can coincide with hyperacusis. The aim of the present study was to investigate the probable influence of serotonergic depletion in nucleus accumbens (NAcc) on the startle reflex. The startle reflexes were examined in Wistar rats (n: 48) in different intensities with and without the background noise. The amplitude of startle reflex significantly increased in NAcc-injected rats without background noise, while this difference disappeared in the presence of background noise in all intensities. These data proposed that the injection of 5, 7-Dihydroxytryptamine (5, 7-DHT) into nucleus accumbens will cause hyperacusis-like behavior, and strengthens the possibility of the role of serotonin and nucleus accumbens in hyperacusis.
This article was published in the following journal.
Name: Neuroscience letters
Purpose Audiologists should be treating hyperacusis patients. However, it can be difficult to know where to begin because treatment protocols and evidence-based treatment studies are lacking. A good p...
Nucleus accumbens dopamine plays a key role in reward-directed approach. Past findings suggest that dopamine's role in the expression of learned behavior diminishes with extended training. However, li...
Anxiety is presumably driven by fear memory. The nucleus accumbens involves emotional regulation. Molecular profiles in the nucleus accumbens related to stress-induced fear memory remain elucidated. F...
GPR83, the receptor for the neuropeptide PEN, exhibits high expression in the nucleus accumbens of the human and rodent brain, suggesting that it plays a role in modulating the mesolimbic reward pathw...
The aim of this study was to determine the prevalence of tinnitus and/or hyperacusis in Danish children aged 10 to 16 years, and to assess associations between tinnitus or hyperacusis and other releva...
Nucleus accumbens plays important roles in the process of opiate addiction and initial of relapse after detoxification.According to the single-centered preliminary open-labeled prospective...
Methadone maintenance treatment (MMT) is one of the main forms of treatments for opioid dependence. Despite its effectiveness and widespread use, people will experience withdrawal if daily...
The purpose of this study is to evaluate the safety and possible effectiveness of deep brain stimulation (DBS) of the nucleus accumbens in children with autism spectrum disorder and treatm...
Nucleus accumbens/anterior limb of internal capsule play important roles in the process of treatment-refractory obsessive compulsive disorder, deep brain stimulation of nucleus accumbens/a...
This is a multi-site, prospective, open-label, randomized, 2 period cross over study comparing the subjects' current 32G pen needle (four groups of pen needles) to the BD Nucleus pen needl...
A composite structure of the TELENCEPHALON that is defined by connectivity. It includes the NUCLEUS ACCUMBENS; the ISLANDS OF CALLEJA; and parts of the CAUDATE NUCLEUS; the PUTAMEN; and the SUBSTANTIA INNOMINATA.
A region in the mesencephalon which is dorsomedial to the substantia nigra and ventral to the red nucleus. The mesocortical and mesolimbic dopaminergic systems originate here, including an important projection to the nucleus accumbens. Overactivity of the cells in this area has been suspected to contribute to the positive symptoms of schizophrenia.
Collection of pleomorphic cells in the caudal part of the anterior horn of the lateral ventricle, in the region of the olfactory tubercle, lying between the head of the caudate nucleus and the anterior perforated substance. It is part of the so-called ventral striatum, a composite structure considered part of the basal ganglia.
Region in the ventral TELENCEPHALON located anterior to the OPTIC CHIASM, posterior to the OLFACTORY PEDUNCLE, rostral to the PIRIFORM AREA and ventral to the NUCLEUS ACCUMBENS.
A serotonin receptor subtype that is localized to the CAUDATE NUCLEUS; PUTAMEN; the NUCLEUS ACCUMBENS; the HIPPOCAMPUS, and the RAPHE NUCLEI. It plays a role as a terminal autoreceptor that regulates the rate of SEROTONIN release from nerve endings. This serotonin receptor subtype is closely related to and has similar drug binding properties as the 5-HT1B RECEPTOR, but is expressed at low levels. It is particularly sensitive to the agonist SUMATRIPTAN and may be involved in mediating the drug's antimigrane effect.
Hearing, auditory perception, or audition is the ability to perceive sound by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear. Sound may be heard through solid, liquid, or gaseous mat...
Selective serotonin reuptake inhibitors SSRIs
Serotonin and norepinephrine reuptake inhibitors (SNRIs) are a class of medications that are effective at easing depression symptoms. SNRIs are also sometimes used to treat other conditions such as anxiety and nerve pain. How SNRIs work Serotonin (se...