One neurotransmitter that plays a role in the science of motivation is
dopamine
. Dopamine’s chemical signal gets passed from one neuron to the next, and between those two neurons, dopamine interacts with various receptors inside the synapse.
What is the most uniquely human part of our brain?
Scientists have identified a part of the brain that seems to be unique to humans. The brain region, called
the lateral frontal pole prefrontal cortex
, was described today (Jan. 28) in the journal Neuron, and is linked to higher thinking processes.
What behavioral response is associated with the neurotransmitter serotonin?
Serotonin and Aggression
Research indicates that, in general, the neurotransmitter serotonin has an inhibitory action in the brain (Daw et al., 2002; Yan, 2002) and that it is deeply involved in the regulation of emotion and behavior, including
the inhibition of aggression
(Davidson et al., 2000; Volavka, 1999).
Which of the following are complications associated with analyzing functional magnetic resonance imaging fMRI?
Which of the following are complications associated with analyzing functional magnetic resonance imaging (fMRI) data? Complication(s): Data in most fMRI studies are
correlational
, and a causal effect of an emotional stimuli on brain activity cannot be determined.
Which of the following neurotransmitter plays an important role in human bonding?
Researchers have found for the first time that dopamine, a vital neurotransmitter in the brain, is involved in human bonding. The results appear in the Proceedings of the National Academy of Sciences.
What part of the brain deals with fear and pleasure?
The amygdala
is the part of the brain that helps deliver emotional responses, such as pleasure and fear.
What is the oldest brain imaging technique?
Direct measures of neural activity:
EEG and MEG EEG
is the oldest functional brain imaging technique, dating back to Berger’s discovery in 1929 that brain electrical activity could be recorded from electrodes placed on the scalp.
How does serotonin act as a neurotransmitter?
Serotonin is a neurotransmitter, and some also consider it a hormone. The body uses it to send messages between nerve cells. It appears to play a role
in mood
, emotions, appetite, and digestion. As the precursor for melatonin, it helps regulate sleep-wake cycles and the body clock.
What is the relationship between serotonin and dopamine?
The neurotransmitters dopamine and serotonin
regulate similar bodily functions but produce different effects
. Dopamine regulates mood and muscle movement and plays a vital role in the brain’s pleasure and reward systems. Unlike dopamine, the body stores the majority of serotonin in the gut, instead of in the brain.
What gland produces serotonin?
Both melatonin and its precursor, serotonin, which are derived chemically from the alkaloid substance tryptamine, are synthesized in
the pineal gland
. Along with other brain sites, the pineal gland may also produce neurosteroids.
What are the advantages and disadvantages of fMRI?
The big advantage of fMRI is that
it doesn’t use radiation like X-rays
, computed tomography (CT) and positron emission tomography (PET) scans. If done correctly, fMRI has virtually no risks. It can evaluate brain function safely, noninvasively and effectively.
What are the disadvantages of an fMRI?
- It is expensive compared to other scans.
- The patient has to stay still to capture clear images.
- Patient’s movements can affect the quality of images.
What is fMRI used to diagnose?
It may be used to examine the brain’s functional anatomy, (determine which parts of the brain are handling critical functions), evaluate
the effects of stroke or other disease
, or to guide brain treatment. fMRI may detect abnormalities within the brain that cannot be found with other imaging techniques.
What is the most important neurotransmitter?
From our point of view the most important neurotransmitters are, in alphabetical order,
acetylcholine
(associated with Alzheimer’s disease and myasthenia gravis), dopamine (Parkinson’s disease), glutamate and GABA (epilepsy and seizures), and serotonin (major depression; although this is arguably the domain of …
What are the 3 main neurotransmitters?
The major neurotransmitters in your brain include
glutamate and GABA
, the main excitatory and inhibitory neurotransmitters respectively, as well as neuromodulators including chemicals such as dopamine, serotonin, norepinephrine and acetylcholine.
What are the 7 neurotransmitters?
Fortunately, the seven “small molecule” neurotransmitters (
acetylcholine, dopamine, gamma-aminobutyric acid (GABA), glutamate, histamine, norepinephrine, and serotonin
) do the majority of the work.
