BOOK 1: Nervous system anatomy and function
... The same electrochemical approach is used to measure dopamine using high performance liquid chromatography with electrochemical detection. Chromatography separates the contents of the microdialysis sample into individual components. A carbon-based detector then measures the amount of each component ...
... The same electrochemical approach is used to measure dopamine using high performance liquid chromatography with electrochemical detection. Chromatography separates the contents of the microdialysis sample into individual components. A carbon-based detector then measures the amount of each component ...
Motor pathway injury in patients with
... measured neuronal g-aminobutyric acidA receptor binding potential with dynamic positron emission tomography scans (n = 27) and compared the binding potential map of the patient group with controls (n = 20). In the current study, white matter volume reduction did not show significant correlation with ...
... measured neuronal g-aminobutyric acidA receptor binding potential with dynamic positron emission tomography scans (n = 27) and compared the binding potential map of the patient group with controls (n = 20). In the current study, white matter volume reduction did not show significant correlation with ...
Neural Correlates of Perceived Brightness in the Retina, Lateral
... (Rossi et al., 1996). Here we will briefly review the key elements of the cortical results and provide additional analysis and comparison with recordings from the LGN and optic tract. Many cortical neurons were found to respond only in stimulus conditions that produced perceptual changes in brightne ...
... (Rossi et al., 1996). Here we will briefly review the key elements of the cortical results and provide additional analysis and comparison with recordings from the LGN and optic tract. Many cortical neurons were found to respond only in stimulus conditions that produced perceptual changes in brightne ...
Sensory Systems - Zanichelli online per la scuola
... separated by two membranes), Reissner’s membrane, and basilar membrane. Organ of Corti sits on the basilar membrane: transduces pressure waves into action potentials. Hair cells: mechanoreceptors in organs of hearing and balance. They have microvilli called stereocilia. Bending of stereocilia open o ...
... separated by two membranes), Reissner’s membrane, and basilar membrane. Organ of Corti sits on the basilar membrane: transduces pressure waves into action potentials. Hair cells: mechanoreceptors in organs of hearing and balance. They have microvilli called stereocilia. Bending of stereocilia open o ...
Constructivist Framework for Understanding Pain
... neurophysiological pain research, however, has determined that nociceptive traffic reaches the hypothalamus and the reticular formation as well as the somatosensory cortex (Burstein, Cliffer and Giesler, 1988; Burstein et al., 1991; Willis and Westlund, 1997). A substantial body of research on pain ...
... neurophysiological pain research, however, has determined that nociceptive traffic reaches the hypothalamus and the reticular formation as well as the somatosensory cortex (Burstein, Cliffer and Giesler, 1988; Burstein et al., 1991; Willis and Westlund, 1997). A substantial body of research on pain ...
XVI. COMMUNICATIONS BIOPHYSICS W. Dr. Ursula
... stimuli in the form of a decrease of amplitude in the steady-state response begins at rates between Z/sec and 100/sec. For rates between 100/sec and 400/sec, wherein the peripheral responses are still synchronized with the stimulus frequency, only the first few (1-3) responses are larger in size tha ...
... stimuli in the form of a decrease of amplitude in the steady-state response begins at rates between Z/sec and 100/sec. For rates between 100/sec and 400/sec, wherein the peripheral responses are still synchronized with the stimulus frequency, only the first few (1-3) responses are larger in size tha ...
Slide 1
... configuration) are an order of magnitude smaller than the attentional effects measured by Treue and Maunsell (1996) ( >80%) even though both studies required similar tasks ...
... configuration) are an order of magnitude smaller than the attentional effects measured by Treue and Maunsell (1996) ( >80%) even though both studies required similar tasks ...
Werkstuk Biologie The Tongue
General knowledge about nervous system
... Evolution of Gene Related to Brain's Growth • A gene that helps determine the size of the human brain has been under intense Darwinian pressure in the last few million years. • It has changed its structure 15 times since humans and chimps separated from their common ancestor. • Evolution has been p ...
... Evolution of Gene Related to Brain's Growth • A gene that helps determine the size of the human brain has been under intense Darwinian pressure in the last few million years. • It has changed its structure 15 times since humans and chimps separated from their common ancestor. • Evolution has been p ...
Escape behavior and neuronal responses to looming stimuli in the
... stimuli between crabs with free and immobilized eyestalks, and found no difference in any response parameter. Therefore, there was no need for immobilizing the eyes during behavioral experiments in the present study. The styrofoam ball (16·cm in diameter) was floating within a bowl-shaped container ...
... stimuli between crabs with free and immobilized eyestalks, and found no difference in any response parameter. Therefore, there was no need for immobilizing the eyes during behavioral experiments in the present study. The styrofoam ball (16·cm in diameter) was floating within a bowl-shaped container ...
Better Together--ASHA Leadership
... How do auditory processing disorders and deficits in language relate to one another—if at all? It's a question that spurs endless debate. Some professionals believe that an auditory processing disorder (APD) is nothing more than a reflection of a language disorder or delay. Others believe true audit ...
... How do auditory processing disorders and deficits in language relate to one another—if at all? It's a question that spurs endless debate. Some professionals believe that an auditory processing disorder (APD) is nothing more than a reflection of a language disorder or delay. Others believe true audit ...
Reference frames for representing the location of visual and tactile
... index of 1.0 corresponds to a one-to-one relationship between the amplitude of the RF and eye shifts and thus to a strict anchoring of the RF to an eye-centered frame of reference. For visual RFs, ‘eye-centered’ is synonymous to ‘retinotopic.’ A displacement index of 0.0 corresponds to a RF that doe ...
... index of 1.0 corresponds to a one-to-one relationship between the amplitude of the RF and eye shifts and thus to a strict anchoring of the RF to an eye-centered frame of reference. For visual RFs, ‘eye-centered’ is synonymous to ‘retinotopic.’ A displacement index of 0.0 corresponds to a RF that doe ...
what distinguishes conscious experience from unconscious processes
... is some object in a room which is positioned such that light striking its surface is reflected towards a person’s eyes. The light enters their eyes and stimulates the cells of their retina. This causes electrical signals to be sent to the brain which goes on to cause other neurons to fire, or preven ...
... is some object in a room which is positioned such that light striking its surface is reflected towards a person’s eyes. The light enters their eyes and stimulates the cells of their retina. This causes electrical signals to be sent to the brain which goes on to cause other neurons to fire, or preven ...
1 Platonic model of mind as an approximation to neurodynamics
... Computational neuroscience may be our best approach to ultimate understanding of the brain and mind but chances that neural models are going to explain soon all aspect of cognition are small. Can we understand higher mental activity directly in terms of neural processes in the brain? It does not see ...
... Computational neuroscience may be our best approach to ultimate understanding of the brain and mind but chances that neural models are going to explain soon all aspect of cognition are small. Can we understand higher mental activity directly in terms of neural processes in the brain? It does not see ...
NMDA receptor blockade causes selective prefrontal
... subjects treated with ketamine (51), all of which have identified modulations of connectivity between cortical sources as underlying the observed MMN differences between groups. The latter study specifically identified a single forward connection from left primary auditory cortex to left superior te ...
... subjects treated with ketamine (51), all of which have identified modulations of connectivity between cortical sources as underlying the observed MMN differences between groups. The latter study specifically identified a single forward connection from left primary auditory cortex to left superior te ...
Broken Mirrors: A Theory of Autism
... must transform auditory signals in the hearing centers of the brain’s temporal lobes into verbal output from the motor cortex. Whether mirror neurons are directly involved in this skill is not known, but clearly some analogous process must be going on. Last, mirror neurons may enable humans to see t ...
... must transform auditory signals in the hearing centers of the brain’s temporal lobes into verbal output from the motor cortex. Whether mirror neurons are directly involved in this skill is not known, but clearly some analogous process must be going on. Last, mirror neurons may enable humans to see t ...
Neuroimaging of cognitive functions in human parietal cortex Jody C
... preparation even before the target stimulus appears [23••,48••,49,51,52•]. Importantly, these baseline signals can be larger in SPL [23••] or IPS [48••,52•] than in other visual areas, suggesting that the parietal lobes may be a source of attentional control signals. Second, several studies have imp ...
... preparation even before the target stimulus appears [23••,48••,49,51,52•]. Importantly, these baseline signals can be larger in SPL [23••] or IPS [48••,52•] than in other visual areas, suggesting that the parietal lobes may be a source of attentional control signals. Second, several studies have imp ...
Trait Conceptualization and Measurement of
... Social Judgment Theory suggests that judgments or attitudes toward a stimulus are affected by the context within which it is being evaluated (Sherif and Hovland 1961). In other words, a stimulus is judged not only by its own characteristics, but also by internal contexts (e.g., material values) that ...
... Social Judgment Theory suggests that judgments or attitudes toward a stimulus are affected by the context within which it is being evaluated (Sherif and Hovland 1961). In other words, a stimulus is judged not only by its own characteristics, but also by internal contexts (e.g., material values) that ...
PNS and Reflexes
... jugular foramen, and run to the throat Nerve IX is a mixed nerve with motor and sensory functions Motor – innervates part of the tongue and pharynx, and provides motor fibers to the parotid salivary gland Sensory – fibers conduct taste and general sensory impulses from the tongue and pharynx ...
... jugular foramen, and run to the throat Nerve IX is a mixed nerve with motor and sensory functions Motor – innervates part of the tongue and pharynx, and provides motor fibers to the parotid salivary gland Sensory – fibers conduct taste and general sensory impulses from the tongue and pharynx ...
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.