Questions tagged [neuroscience]

For questions on the structure and function of the nervous system.

129 questions with no upvoted or accepted answers
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408 views

What are the neurological differences between varying types of love?

It stands to reason that the biochemical cascade involved when a person experiences love, gives a feeling of well-being and drive. Studies in neuroscience have involved chemicals that are present ...
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114 views

Supplementary Motor Area or Juxtapositional Lobule Cortex

Harvard-Oxford Cortical Structural Atlas now calls the 'Supplementary Motor Area' the 'Juxtapositional Lobule Cortex (formerly Supplementary Motor Cortex)'. I've looked for papers that explain the ...
6
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1answer
109 views

Probiotics and Mental Health

While trying to find research articles within the realm of Psychosynthesis, I have been looking at the "collective unconscious" Image Source: Wikipedia Commons - (CC BY-SA 3.0) Lower Unconscious ...
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986 views

Does testosterone level cause more sexual dream content?

I have long been interested in dreaming, including how dream content can shed some light on brain chemistry. I did a search on the subject of testosterone levels altering dream content and see some ...
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116 views

Long term effect of masturbation on Estrogen receptors

I was writing an article on masturbation and was doing some net based research. I saw on a paper (Phillips-Farfán et al. 2007) that frequent masturbation increases estrogen receptors in the brain. ...
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30 views

Do neurons involved in reflex movements process information or they just transmit a signal?

According to Reflex A reflex, or reflex action, is an involuntary and nearly instantaneous movement in response to a stimulus. A reflex is made possible by neural pathways called reflex arcs which ...
5
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198 views

How are tactile pleasure and pain differentiated in the somatosensory cortex?

A recent question here asked about (mostly) how pain and pleasure are differentiated in pathways involving reward/aversion cues. But there was some confusion as to what the question really wanted to ...
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131 views

Will studying formal logic improves logical reasoning?

Reason for asking question: I am looking to see if there is any good empirical evidence or study that shows or suggests that studying former logic or maybe informal logic would actually improve ...
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120 views

Is there a tangible benefit of synchronising the sample clock to the laser pulses in a resonant scanning two-photon microscope?

NI data acquisition cards offer a possibility of synchronising data acquisition with the pulses of a 80 MHz Ti:Sapphire laser. This supposedly helps improve the signal to noise ratio, since the true ...
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143 views

How does the hippocampus and the “Papez” circuit form a memory?

It is admitted the hippocampus is necessary to the formation of new long term memories. At first, information goes back and forth between various parts of the cortex and the hippocampus. That's how a ...
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59 views

How are psychological bio-markers discovered?

Recently, this paper [1] claiming to be able to distinguish bipolar disorder from major depressive disorder via a urine sample has come to my attention. Despite reading the paper, I'm unable to ...
5
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70 views

Is movement/activity level related to serotonin availability or reuptake rates in the brain?

I'm aware of this research article that explores the relationship between motion and serotonin systems: 5-HT and motor control: a hypothesis. Based on the article above, it seems to me that a "very ...
5
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382 views

What are the brain regions related to tinnitus shown in this figure?

I am interested in learning about the neural mechanisms behind tinnitus, and was wondering if someone could help me to name the parts of the brain on this image that show increased activity in ...
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66 views

What neurotransmitters can be suppressed/promoted by tDCS

Transcranial Direct Current Stimulation (tDCS) has been shown to modify suppression in the visual cortex and GABA suppression in motor control. As of now, the exact neurobiological mechanism that ...
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151 views

What is the neurobiological basis of Spearman general factor of intelligence?

I found here a brief intro to genetic factor of human intelligence: http://www.ncbi.nlm.nih.gov/pubmed/1036362 Also there is known that gyrus hipocampii is basis of STM which have role in general ...
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56 views

What activity causes the highest level of brain-activity?

I expect balancing on a tightrope and juggling apples while listening to Mozart would trigger more brain activity than say playing chess, and while there are many ways to measure/define brain activity,...
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66 views

The same neuron sometimes released different neurotransmitters, so how does this affect our interpretation of computational models?

Most studies I see compare firing rate with some observed variable (stimuli or behavior). However, they treat all spikes the same. But neurons sometimes release different neurotransmitters depending ...
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18 views

How common is it to include unmedicated patients in first episode psychosis (or any type of psychosis) studies?

Is anyone familiar with this open access study? Radua, J., Borgwardt, S., Crescini, A., Mataix-Cols, D., Meyer-Lindenberg, A., McGuire, P. K., & Fusar-Poli, P. (2012). Multimodal meta-analysis of ...
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85 views

Why are there still left handed people?

About 90% of all people are right handed. About 10% of people are left handed. So why has left handedness persisted for so long throughout human evolution? Why does it stick around? What are the best ...
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223 views

ADHD and the Anterior Cingulate Cortex (ACC)

The cingulate cortex plays a significant role in mediating cognitive influences on emotion (Stevens, Hurley, & Taber, 2011). Lower-than-normal activations within cingulate cortex have been ...
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57 views

Why do only about 20% of the people with a heart attack report a near-death experience?

It has been shown that only around 20% of people who get a cardiac arrest and revived could tell something about a near death experience (NDE). But if an NDE is considered to be something with the ...
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303 views

What neural mechanism explains the phenomenon that bad memories fade faster than good ones?

Several studies have suggested that negative memories fade faster than positive memories: Walker, Vogl and Thompson (1997) had the subjects kept dairy during a 3-month period, and rated the events on ...
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42 views

How separate are the left and right hemisphere vasculature?

It appears as if there are communicating arteries between the right and left hemispheres of the brain, but it is difficult to grasp the larger picture. To what extent is the blood supply to each ...
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65 views

Why does the unilateral 6-OHDA lesion Parkinson's model cause ipsilateral rotations?

As far as I understand, the loss of dopaminergic neurons should hinder movement in the contralateral side of the body, resulting in contralateral rotations when the animal tries to move forward.
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98 views

What is the relationship between topographic maps and sensory memory?

Sensory maps are defined functionally: they exist for a certain time window, are overwritten quickly, are generally inaccessible to introspective control. Topographic maps are defined biologically: ...
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176 views

Is dominance a hypothetical construct or is it based in neurobiology?

There are several personality tests which have dominance as trait or type as result. In addition to this question: How to measure dominance and submissiveness? How are dominant types constructed in ...
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35 views

Understanding the transition from integrated form to ODE form of neuron models

I'm trying to convert a fairly complicated neuron model from integrated form (a form of the spike response model) to ODE form for use in the BRIAN simulator. The BRIAN simulator requires neuron/...
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43 views

Are memories stored as patterns of chemicals/emotions?

Lately, I (as someone with no experience or prior knowledge in the topic) have been thinking about...thinking. The part that intrigues me the most is memory. As a computer-y type person, I tend to ...
3
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16 views

Is there a structural difference between Nerve cells in the Somatic and Autonomic Nervous Systems

Do the actual nerve cells in the Somatic and Autonomic Nervous Systems have a different structure or chemical make up or are they the same thing just separate systems?
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60 views

What are the neuroscience research findings on the importance of breaks in cognitive function and specifically learning?

When I say breaks I mean breaks between periods of the same course, breaks between two distinct courses, single days of, weekends, couple days of, few days of, longer periods of holidays of duration ...
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36 views

What might be the daily experience of someone who does not have an orientation association area?

The orientation association area gives us a sense of our body in time and space. What would it be like without this part of the brain assuming everything else works normally? Can the brain separate ...
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23 views

Is it an issue to use a model for stimulus selection, when the same model is later tested against fMRI data based on those stimuli?

I am planning an fMRI experiment which looks at similarity of human brain activation when prompted with known words. The goal of the experiment is to compare the similarity of activation with ...
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39 views

Inducing error-related negativity

Which tasks induce the strongest error-related negativity? I'm trying to build a classifier that measures EEG signals to detect when a subject observes an error being committed by another subject. It ...
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34 views

Task-based fMRI dataset with very simple task (e.g. view stripes)

For my Bachelor thesis I need an fMRI dataset in order to look for causal relationships. I want to be able to confirm my work, so the causal relationships should already be known. Therefore, ideally ...
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50 views

Is the phenomenom of “subjective consciousness” or “qualia” formally captured by any state-of-the-art Theoretical Model in Neuroscience?

Is the phenomenon of "subjective consciousness" or "qualia" formally captured or defined by any state-of-the-art Theoretical Model in Neuroscience? If so, can you share a brief summary of such ...
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424 views

Is Tinnitus a result of brain damage?

It is well known that loud noises can lead to hearing problems such as temporary hearing loss or tinnitus (ringing in the ears) and even permanent hearing loss. But this is the first time scientists ...
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148 views

Are there any practical implications for the purported neuroprotective effects of lamotrigine?

Lamotrigine is an antiepileptic drug used to treat seizures. Off-label, it is used to treat a variety of neurological and psychiatric disorders. Judging from Google Scholar, lamotrigine continues to ...
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50 views

Task-based vs task-positive networks

Do the terms "task-positive network" and "task-based network" refer to the same thing, such as the Fronto-Parietal Control Network (FPCN), as distinct from the task-negative networks such as the ...
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73 views

Does increased motor development always occur at the expense of speech development, or vice versa?

It is often said that infants / toddlers* develop in a focused manner. I am specifically interested in the notion that a quick development of speech occurs at the expense of motor skill development ...
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73 views

Infants tend to look longer at novel stimuli than at repeated stimuli, is this true in adults?

I have recently read an article in which it is stated, that the researchers can discriminate if a baby knows an object, by looking at the length of time the baby looks at the object. Do adults also ...
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61 views

Neurotransmitter detection in the brain

How are the effects of drugs in the brain, in terms of neurotransmitters measured? For example, Selective Seretonin Reuptake Inhibitors are a class of anti-depressants. How was and is this type of ...
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0answers
128 views

Is the fight or flight response considered voluntarily or involuntarily?

I look in my rearview and see someone feet from me still speeding up and my heart rate feels like it doubles. It stayed like that for an hour. Had troubles concentrating and working well into the ...
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100 views

Physiological mapping of frustration

What physiological changes are seen in the brain when a person is experiencing frustration? What effects do these changes have on learning? Optional background: I'm trying to figure out an ...
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82 views

How does neurotransmitter distribution and usage vary thought the brain?

I understand that neurotransmitters are used to send signals between neurons in the brain and that some are used for rather specific functions. However, is the exact distribution/concentration/...
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70 views

Can microdialysis be made in Drosophila melanogaster?

Microdialysis is a common method to study the effects of drugs on specific mamal brains zones (mostly in rats), in order to study the it's interaction with the function of those specific areas that ...
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440 views

How does the body experience free-fall during a hypnic jerk

Today I learned that a sudden jerk that you sometimes experience when you are just about to fall asleep due to a sense of free-fall or weightlessness is called a hypnic jerk. If, while sleeping, I ...
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22 views

Minimum constant neuron firing rate

Please forgive what may be an elementary question for many of you. I am trying to understand the range of firing rates in an idealized neuron. I understand what governs the maximum firing rate of a ...
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13 views

Is a New Software Library to Simulate Natural Processes like Hunger Needed?

This sort of dovetails off a question I asked on the AI Exchange: Is There A Need For Stochastic Inputs To Mimic Real-World Biology And Environment? I figured this site would give more insight on ...
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0answers
16 views

What determines whether a monoamine neurotransmitter is recycled or broken down by MAO?

When a neurotransmitter detaches from the receptor and is returned to the neuron via the transporter, what are the primary factors that influence whether that molecule is re-stored in a vesicle by ...
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16 views

What characterizes Grossberg's resonances?

Following Bryan Krause's advice I tried to be more specific and picked as one specific neural theory of consciousness Stephen Grossberg's Adaptive Resonance Theory in which a specific group of ...