Radiologic-Pathologic Correlation Polymicrogyria
... unlayered neurons, resulting in an appearance of looping back and forth, or (b) poorly laminated cortex, in which four individual layers are not distinctly evident; layered polymicrogyria can have (a) four-layered cortex, in which a molecular layer is present, and there is a second layer of unlamina ...
... unlayered neurons, resulting in an appearance of looping back and forth, or (b) poorly laminated cortex, in which four individual layers are not distinctly evident; layered polymicrogyria can have (a) four-layered cortex, in which a molecular layer is present, and there is a second layer of unlamina ...
Contextual modulation and stimulus selectivity in extrastriate cortex
... the retina and primary visual cortex has been extensively described in the literature. Here, we describe how similar computations can also elaborate feature selectivity in the extrastriate areas of both the dorsal and ventral streams of the primate visual system. We discuss recent work that makes us ...
... the retina and primary visual cortex has been extensively described in the literature. Here, we describe how similar computations can also elaborate feature selectivity in the extrastriate areas of both the dorsal and ventral streams of the primate visual system. We discuss recent work that makes us ...
9.14 Questions on chapter 1 of Brain Structure and Its
... 1) What cranial nerves carry information from electroreceptors in certain fish? Why is electroreception so useful for these fish? Why is their visual sense not adequate? 2) No placental mammals have electrosensory abilities, but one non-placental mammal does have such an ability. Which one? How are ...
... 1) What cranial nerves carry information from electroreceptors in certain fish? Why is electroreception so useful for these fish? Why is their visual sense not adequate? 2) No placental mammals have electrosensory abilities, but one non-placental mammal does have such an ability. Which one? How are ...
FINAL-FTDMulticenterStudy_R - ORBi
... comparing metabolism in the different behavioral subgroups of fv-FTD. We therefore divided the FTD group into subgroups based on NPI scores for disinhibition and apathy. A score of 8 or more was considered to indicate pathology while a score of 4 or less was considered to indicate a preserved capaci ...
... comparing metabolism in the different behavioral subgroups of fv-FTD. We therefore divided the FTD group into subgroups based on NPI scores for disinhibition and apathy. A score of 8 or more was considered to indicate pathology while a score of 4 or less was considered to indicate a preserved capaci ...
LINKING PROPOSITIONS*
... that linking propositions form some of the necessary elements of that domain. The question then becomes, what kinds of linking propositions do visual scientists use, what are their logical interrelationships and truth-values, and what roles do they play in the structure of modern visual science? In ...
... that linking propositions form some of the necessary elements of that domain. The question then becomes, what kinds of linking propositions do visual scientists use, what are their logical interrelationships and truth-values, and what roles do they play in the structure of modern visual science? In ...
... In this study we found that in electrophysiologically identified EC layer V principal cells17, bath application of the cholinergic agent carbachol (CCh) (5 mM, n ¼ 38; 10 mM, n ¼ 49) blocked the slow afterhyperpolarization that follows a train of action potentials and, in most cases (84% and 98% in ...
fMRI can see M1, premotor activity Corresponding to Individual
... equally (co-contraction) and when they are both inactive (rest). The torque and muscle activation target values were chosen so as to get two uncorrelated smooth regressors, one for each muscle, on convolution with a haemodynamic response function (HRF) (Fig. 2). ...
... equally (co-contraction) and when they are both inactive (rest). The torque and muscle activation target values were chosen so as to get two uncorrelated smooth regressors, one for each muscle, on convolution with a haemodynamic response function (HRF) (Fig. 2). ...
Why light
... Buy why 4 layers for form and color. My guess is that there’s a finer “breakdown” of the layers into 3&4 and 5&6. It is not yet known precisely what the differences between these two pairs are. Why group them? Think of any large organization. It’s usually more efficient to put the people doing the s ...
... Buy why 4 layers for form and color. My guess is that there’s a finer “breakdown” of the layers into 3&4 and 5&6. It is not yet known precisely what the differences between these two pairs are. Why group them? Think of any large organization. It’s usually more efficient to put the people doing the s ...
Cranial Nerve I
... • Non specific pathway that in general transmit pain, temperature and touch • Give branches to reticular formation and thalamus on the way up • Sends general information that is also involved in emotional aspects of perception ...
... • Non specific pathway that in general transmit pain, temperature and touch • Give branches to reticular formation and thalamus on the way up • Sends general information that is also involved in emotional aspects of perception ...
2-Motor System2009-03-20 18:254.4 MB
... The reason is that pure pyramidal tract lesion is very very rare, and spasticity is due to loss of inhibitory control of extrapyramidal tract. ...
... The reason is that pure pyramidal tract lesion is very very rare, and spasticity is due to loss of inhibitory control of extrapyramidal tract. ...
Plasticity in the developing brain: Implications for
... if exposed early in life. Skills such as playing a musical instrument and the ability to play sports such as golf or baseball are easier to acquire in childhood. It is well known that impaired vision early in life from strabismus or ocular disorders can lead to permanent amblyopia because of reorgan ...
... if exposed early in life. Skills such as playing a musical instrument and the ability to play sports such as golf or baseball are easier to acquire in childhood. It is well known that impaired vision early in life from strabismus or ocular disorders can lead to permanent amblyopia because of reorgan ...
Analogues of simple and complex cells in rhesus monkey auditory
... that respond either to the onset or the offset of a small spot of light; complex cells, by contrast, respond with mixed ON and OFF responses throughout their RF. In addition, simple cells show spatial summation within each of their subregions. In both auditory and somatosensory cortex, inhibitory su ...
... that respond either to the onset or the offset of a small spot of light; complex cells, by contrast, respond with mixed ON and OFF responses throughout their RF. In addition, simple cells show spatial summation within each of their subregions. In both auditory and somatosensory cortex, inhibitory su ...
Sensory signals during active versus passive movement
... from several laboratories have, however, yielded major insights into our understanding of how sensory signals are processed during movement. In this review, I consider recent advances in this field, focusing on experiments in the vestibular system that have provided evidence for the differential pro ...
... from several laboratories have, however, yielded major insights into our understanding of how sensory signals are processed during movement. In this review, I consider recent advances in this field, focusing on experiments in the vestibular system that have provided evidence for the differential pro ...
Point-Light Biological Motion Perception Activates Human Premotor
... Pilot data were acquired from individual subjects using alternate tasks or with no task before the present design was finalized; activation patterns observed in these pilot scans resembled those found in the results of the analyses reported here (see below). However, during passive observation scans ...
... Pilot data were acquired from individual subjects using alternate tasks or with no task before the present design was finalized; activation patterns observed in these pilot scans resembled those found in the results of the analyses reported here (see below). However, during passive observation scans ...
Протокол
... structures produce rapid and forceful behavioral reactions such as the violent nausea that results from putrid odors. The olfactory system may not be entirely afferent. Following lesion of the olfactory receptors or bulb, some fibers remain intact in the olfactory tract. Although the remaining fiber ...
... structures produce rapid and forceful behavioral reactions such as the violent nausea that results from putrid odors. The olfactory system may not be entirely afferent. Following lesion of the olfactory receptors or bulb, some fibers remain intact in the olfactory tract. Although the remaining fiber ...
melanin in the body
... 99% of calcium in the body is stored in our bones therefore our ability to absorb calcium is extremely important. The process of making Vitamin D begins in the skin; as light passes through the skin’s melanin layer it is converted into a substance called D3 which passes into the blood stream and the ...
... 99% of calcium in the body is stored in our bones therefore our ability to absorb calcium is extremely important. The process of making Vitamin D begins in the skin; as light passes through the skin’s melanin layer it is converted into a substance called D3 which passes into the blood stream and the ...
Biology 358 — Neuroanatomy First Exam
... 33—40% of this tract’s UMNs (upper motor neurons) originates within the premotor cortex, 33—40% originate within the primary motor cortex, and 20% originate within the somesthetic cortex of the cerebrum. Within the brain this tract gives off collateral branches to the basal ganglia, thalamus, cerebe ...
... 33—40% of this tract’s UMNs (upper motor neurons) originates within the premotor cortex, 33—40% originate within the primary motor cortex, and 20% originate within the somesthetic cortex of the cerebrum. Within the brain this tract gives off collateral branches to the basal ganglia, thalamus, cerebe ...
Nervous System
... 2.1 Classify neurons as afferent, efferent, or interneurons. • classification based on function: – sensory or afferent neuron: - conducts nerve impulses from the body to the brain or spinal cord. - endings of its dendrite may be modified to become nerve receptors. - usually unipolar in structure. – ...
... 2.1 Classify neurons as afferent, efferent, or interneurons. • classification based on function: – sensory or afferent neuron: - conducts nerve impulses from the body to the brain or spinal cord. - endings of its dendrite may be modified to become nerve receptors. - usually unipolar in structure. – ...
Primary Visual Pathway
... • Each eye sees a part of the visual space that defines its visual field ...
... • Each eye sees a part of the visual space that defines its visual field ...
The Biological Bases of Time-to
... possible that animals with well-developed binocular stereoscopic visual systems, and subpopulations of neurons that respond to stereoscopic motion directions specifying object-motion paths directly toward the animal, might also be used for TTC computations. In this work and his other writings, Gibso ...
... possible that animals with well-developed binocular stereoscopic visual systems, and subpopulations of neurons that respond to stereoscopic motion directions specifying object-motion paths directly toward the animal, might also be used for TTC computations. In this work and his other writings, Gibso ...
The what, where and how of auditory
... Natural sounds, such as speech, are often harmonic: that is, they have energy at integer multiples of the lowest (or fundamental) frequency. This is illustrated in panel b of the figure, which shows a spectrogram of a human speech sound in which horizontal bands of energy are visible. Importantly, i ...
... Natural sounds, such as speech, are often harmonic: that is, they have energy at integer multiples of the lowest (or fundamental) frequency. This is illustrated in panel b of the figure, which shows a spectrogram of a human speech sound in which horizontal bands of energy are visible. Importantly, i ...
Time perception
Time perception is a field of study within psychology and neuroscience that refers to the subjective experience of time, which is measured by someone's own perception of the duration of the indefinite and continuous unfolding of events. The perceived time interval between two successive events is referred to as perceived duration. Another person's perception of time cannot be directly experienced or understood, but it can be objectively studied and inferred through a number of scientific experiments. Time perception is a construction of the brain that is manipulable and distortable under certain circumstances. These temporal illusions help to expose the underlying neural mechanisms of time perception.Pioneering work, emphasizing species-specific differences, was conducted by Karl Ernst von Baer. Experimental work began under the influence of the psycho-physical notions of Gustav Theodor Fechner with studies of the relationship between perceived and measured time.