Of mice and mental models: Neuroscientific implications of risk-optimized behavior in the mouse
(Medical Xpress) -- Regardless of an organism’s biological complexity, every encephalized animal continuously makes under-informed behavioral choices that can have serious consequences. Despite its ubiquity, ...
Neuroscience
May 25, 2012 |
4.6 / 5 (7) |
0
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Limits to growth: Scientists identify key metastasis-enabling enzyme
(Medical Xpress) -- On the complex road to eradicating cancer, controlling or preventing metastatic growth initiated by primary tumors is high on the to-do list. A key area of such research is the development ...
Medical research
May 22, 2012 |
4.3 / 5 (9) |
0
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Seeing is as seeing does: Spatially-structured retinal input in early development of cortical maps
(Medical Xpress) -- Remarkably, cortical maps show that neurons in the primary visual cortex have specific preferences for the location and orientation of a given visual field stimulus – but how these ...
Neuroscience
Apr 26, 2012 |
5 / 5 (6) |
1
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Dreamless nights: Brain activity during nonrapid eye movement sleep
(Medical Xpress) -- The link between dreaming and rapid eye movement (REM) sleep are well understood – but the fact that consciousness is reduced during nonrapid eye movement (NREM) sleep is not. Recently, ...
Neuroscience
Apr 09, 2012 |
4.6 / 5 (21) |
0
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Take your time: Neurobiology sheds light on the superiority of spaced vs. massed learning
(Medical Xpress) -- College and cramming – often where’s there’s one, the other is not far behind. That said, however, it has been recognized since the late 1800s that repeated periodic exposure ...
Neuroscience
Mar 28, 2012 |
4.5 / 5 (21) |
3
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Your brain on 'shrooms: fMRI elucidates neural correlates of psilocybin psychedelic state
(Medical Xpress) -- Psychedelic substances have long been used for healing, ceremonial, or mind-altering subjective experiences due to compounds that, when ingested or inhaled, generate hallucinations, perceptual ...
Neuroscience
Feb 29, 2012 |
4.9 / 5 (43) |
45
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Your brain on dye: Imaging neuronal voltage with fluorescent sensors and molecular wires
(Medical Xpress) -- Optically monitoring the brain’s neuronal activity can be accomplished in several ways, including electrochromic dyes, hydrophobic anions, calcium imaging, or voltage-sensitive ion ...
Neuroscience
Feb 24, 2012 |
4.9 / 5 (10) |
0
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Remembrance of things future: Long-term memory sets the stage for visual perception
(Medical Xpress) -- Rather than being a passive state, perception is an active process fueled by predictions and expectations about our environment. In the latter case, memory must be a fundamental component ...
Neuroscience
Dec 28, 2011 |
3.8 / 5 (16) |
4
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Beyond brain scanning: Simultaneous high-resolution 3D neural imaging and photostimulation
(Medical Xpress) -- Neuroanatomy and neurophysiology are inherently three-dimensional domains. Neuronal cell body projections – axons and dendrites – can interconnect large numbers of neurons distributed ...
Neuroscience
Nov 28, 2011 |
5 / 5 (10) |
2
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The error-correcting brain: New insights into the neurobiology of adaptive behavior
(Medical Xpress) -- A key phenomenon studied by neuroscientists is the brain’s ability to recognize errors when they occur, link them to the associated behavior, and apply those errors in a way that modifies ...
Neuroscience
Oct 27, 2011 |
4.8 / 5 (13) |
6
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The brain on drugs: Defining the neural anatomy and physiology of morphine on dopamine neurons
(Medical Xpress) -- Morphine's analgesic properties are as potent as its addictive potential are problematic. The neural pathway for that addiction is typically associated with dopamine (DA) neurons of the ...
Neuroscience
Oct 04, 2011 |
4.8 / 5 (4) |
1
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Now see this: Anti-inflammatory treatment reverses stroke-induced compromise in sensory learning
(Medical Xpress) -- One of the many potential consequences of ischemic stroke – a lesion, or localized pathological change in the brain, in which blood flow insufficient to meet metabolic demand leads ...
Inflammatory disorders
Sep 22, 2011 |
4.1 / 5 (10) |
2
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Think fast: Speed of thought and perception limited by unified neocortical gateway
(Medical Xpress) -- Historically, perceptual and response rates when multitasking have been interpreted as being limited by independent bottlenecks. While a more recent view suggests that a common bottleneck ...
Neuroscience
Aug 24, 2011 |
4.3 / 5 (13) |
2
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Categories rule: High-order brain centers pave the way for visual recognition
(Medical Xpress) -- The real world is, in a word, cluttered – but thanks to evolution, we (and other mammals) have no trouble detecting objects in visually complex natural environments. Determining precisely ...
Neuroscience
Jul 11, 2011 |
4 / 5 (8) |
4
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Talk softly but carry a tiny stick: Stroke prevention and recovery with nanotube-delivered siRNA
(Medical Xpress) -- Of the world’s leading causes of death, stroke ranks second – and occurring 8 out of 10 times is ischemic stroke: reduced blood supply to the brain creates a shortage of oxygen, ...
Medical research
Jul 05, 2011 |
3.2 / 5 (5) |
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