Feature Stories
Motion perception revisited: High Phi effect challenges established motion perception assumptions
(Medical Xpress)—Optical illusions abound in human visual perception, as demonstrated by the following well-known examples. Although many are static illusions, motion illusions also occur. Recently, scientists ...
Neuroscience
Apr 23, 2013 |
3 / 5 (2) |
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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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Memory vs. Math: Same brain areas show inverse responses to recall and arithmetic
(Medical Xpress)—Scientists have historically relied on neuroimaging – but not electrophysiological – data when studying the human default mode network (DMN), a group of brain regions with lower activi ...
Neuroscience
Sep 17, 2012 |
4.8 / 5 (11) |
1
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Sizing things up: The evolutionary neurobiology of scale invariance
(Medical Xpress)—Visual perception is far more complex and powerful than our experience suggests. Moreover, in attempting to both understand vision and implement it in a computational device, the fact that ...
Neuroscience
Feb 28, 2013 |
4.8 / 5 (10) |
14
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Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update)
(Medical Xpress)—The existential psychologist Rollo May wrote that "depression is the inability to construct a future"1 while Lionel Tiger stated that "optimism has been central to the process of human e ...
Neuroscience
Apr 02, 2013 |
4.5 / 5 (11) |
5
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Of enzymes and aging: Tryptophan metabolism plays key role in aging and age-related neurological diseases
(Medical Xpress)—In the battle against aging and age-related neurological diseases such as Parkinson's and Alzheimer's, a key factor has long appeared to be the toxicity of proteins which tend to aggregate. ...
Medical research
Oct 05, 2012 |
4.7 / 5 (14) |
3
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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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The visual system as economist: Neural resource allocation in visual adaptation
(Medical Xpress)—It has long been held that in a new environment, visual adaptation should improve visual performance. However, evidence has contradicted this expectation: Adaptation sometimes not only ...
Neuroscience
Mar 30, 2013 |
5 / 5 (2) |
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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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Off the grid: Environmental novelty changes hippocampal firing patterns
(Medical Xpress)—The brain's two hippocampal formations – one in each hemisphere's temporal lobe, medial to the inferior horn of the lateral ventricle and typically referring to the dentate gyrus, the ...
Neuroscience
Nov 07, 2012 |
5 / 5 (5) |
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Step by step: Feature detection and combination in perceptual learning and object identification
(Medical Xpress)—The ease and immediacy with which we recognize familiar objects escapes our notice. However, a novel, ambiguous, or highly complex object requires practice to achieve such perceptual facility. ...
Neuroscience
Jan 11, 2013 |
3.7 / 5 (6) |
3
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Face the facts: Neural integration transforms unconscious face detection into conscious face perception
(Medical Xpress)—The apparent ease and immediacy of human perception is deceptive, requiring highly complex neural operations to determine the category of objects in a visual scene. Nevertheless, the human ...
Neuroscience
Dec 31, 2012 |
4.8 / 5 (9) |
0
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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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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) |
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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) |
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