Researchers conducted a detailed study on serotonin, a key molecule in influencing mood and behavior, tracing its impact from the molecular level to the brain's overall functioning.
Researchers have developed a computer program that has tracked the manner in which different forms of dementia spread within a human brain. They say their mathematical model can be used to predict where and approximately when an individual patient's brain will suffer from the spread, neuron to neuron, of "prion-like" toxic proteins -- a process they say underlies all forms of dementia.
The medical system focuses on the mechanical model of pain despite copious amounts of evidence pointing to the involvement of the brain. But these advancemen...
Guest post by Alycia Halladay, chief science officer for the Autism Science Foundation
A new mathematical model has shown how different gene variants enable random diversity in neurons.
Download this Premium Vector about 3D neuron system model. Vector graphic design element for science publication., and discover more than 15 Million Professional Graphic Resources on Freepik
Fig. 1. Components of a forward model of fMRI and electrophysiological (MEG) data. The generative neuronal/haemodynamic model is shown in the top panel, which illustrates the pathway from neural populations (blue panel on the left) to neurovascular coupling (grey panel in the centre) and haemodynamic response (orange panel on the right). The neural model (left panel) is a laminar specific canonical microcircuit (CMC) comprising four populations (numbered 1–4) per brain region. Each CMC is linked through extrinsic (between regions) forward and backward connections. Pre- or postsynaptic neuronal signals β are combined (at the level of the putative astrocytes) which is presented in the middle panel. The ensuing neurovascular signal z(t) at time t drives the haemodynamic part of the model (right panel). This accounts for increased blood flow to the venous compartment (pictured) and is accompanied by changes in blood volume and the level of deoxyhaemoglobin. The bottom panels illustrate the electrophysiological and fMRI measurements that arise from the neuronal and haemodynamic parts of the model respectively, mediated by a spatial lead field model for MEG and a BOLD signal model for fMRI. To make inversion of this model tractable, we split the neuronal and haemodynamic parts and connected them via neuronal drive functions – see text and Fig. 5. - "Comparing dynamic causal models of neurovascular coupling with fMRI and EEG/MEG"
string neuron
I knew the future would be shocking but this is a whole other level.
The medical system focuses on the mechanical model of pain despite copious amounts of evidence pointing to the involvement of the brain. But these advancements in pain science have caused this huge pendulum wing to the opposite extreme, where claims are being made that ALL pain is ALL in the...
Introduction — Neuromatch Academy: Computational Neuroscience
The first genetically modified laboratory jellyfish opens up new ways to answer neuroscience questions
In this work, inspired by cognitive neuroscience experiments, we propose recurrent spiking neural networks trained to perform multiple target tasks. These models are designed by considering neurocognitive activity as computational processes through dynamics. Trained by input–output examples, these spiking neural networks are reverse engineered to find the dynamic mechanisms that are fundamental to their performance. We show that considering multitasking and spiking within one system provides insightful ideas on the principles of neural computation.
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Easy labelled brain model made using play dough. Fun way to learn about brain structure and function. Simple neuroscience for kids
The reptilian brain model is not based on evolution or neuroscience. What neuroscience-based stories or concepts should use you instead?
Active inference is the Free Energy principle of the brain applied to action. It is relatively supported by experimental neuroscience studies and is a popular model of ‘how the brain works’. In this…
Figure 2: Examples of the four roles of supervised machine learning in neuroscience. 1 - ML can solve engineering problems. For example, it can help researchers control a prosthetic limb using brain activity. 2 - ML can identify predictive variables. For example, by using MRI data, we can identify which brain regions are most predictive for diagnosing Alzheimer’s disease (Lebedev et al. 2014). 3 - ML can benchmark simple models. For example, we can compare the predictive performance of the simple “population vector” model of how neural activity relates to movement (Georgopoulos, Schwartz, and Kettner 1986) to a ML benchmark (e.g. an RNN). 4 - ML can serve as a model of the brain. For example, researchers have studied how neurons in the visual pathway correspond to units in an artificial network that is trained to classify images (Yamins and DiCarlo 2016). - "The roles of supervised machine learning in systems neuroscience"
A pack of over 40 pages of Neuroscience and Brain-based worksheets, visual aids, and posters. You will receive each poster/page in PDF and PNG format, as well as in colour and black and white printable formats (for best quality colour or b/w printing). The posters can be printed up to the 24x36" file size listed to be used as a poster, or on regular paper to be utilized as a visual aid for professional use. You will receive 1 PDFs and 1 zip files with large PNG images of each page. PNG images and PDF's can be helpful for psychoeducation via in person or virtual counselling. This is an instant download. You will not receive anything in the mail. You will get an email with the link to download from Etsy (or you can find the download link in your Etsy orders section on desktop). Open the PDF in Acrobat Reader and print on your home computer or at a copy shop. The pages cover the following topics: Brain Regions, Brain Functions, Models of the Brain, Hand Model of the Brain, Brain Organization, Neuroscience, Neuroplasticity, Neurons & Synapses, The Brain & Trauma, Brain Chemicals, Mood, Brain Changes, Stress & Worry, The Response System, The Nervous System, Fight, Flight, Flee, Memory, Trauma and Memory, Brain Dumping, and Worksheets. This file is for personal use only and cannot be reproduced or resold commercially.
