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JERZY KONORSKI`S THEORY OF CONDITIONED
... Warsaw discovered a certain gap in his reasoning. They arrived at the .conclusion that Pavlov's model of conditioned reflex was not sufficient t o explain the acquired motor behavior of animals and men. The association in time of conditioned and unconditioned stimuli does not ensure the learning of ...
... Warsaw discovered a certain gap in his reasoning. They arrived at the .conclusion that Pavlov's model of conditioned reflex was not sufficient t o explain the acquired motor behavior of animals and men. The association in time of conditioned and unconditioned stimuli does not ensure the learning of ...
Lecture 12
... – pattern of two-point thresholds across body – cortical magnification in sensory homunculus • factors – receptor density at the skin, – receptive field size ...
... – pattern of two-point thresholds across body – cortical magnification in sensory homunculus • factors – receptor density at the skin, – receptive field size ...
Stimulus-Specific Adaptation in Auditory Cortex Is an NMDA
... – First, during an oddball paradigm with frequency deviants, neuronal responses showed clear SSA but failed to encode novelty in a manner analogous to the human MMN. – Second, oddball paradigms using intensity or duration deviants revealed a pattern of unit responses that showed sensory adaptation, ...
... – First, during an oddball paradigm with frequency deviants, neuronal responses showed clear SSA but failed to encode novelty in a manner analogous to the human MMN. – Second, oddball paradigms using intensity or duration deviants revealed a pattern of unit responses that showed sensory adaptation, ...
Temporal and Spatial Integration in the Rat SI Vibrissa Cortex
... correct for the barrel in which the unit is recorded, and largest in layers V and VI where most cells respond to deflections of several adjacent whiskers, sometimes as many as 20 or more (see also Ref. 5). Moreover, under these conditions, cortical vibrissa units, like those in the periphery (79), r ...
... correct for the barrel in which the unit is recorded, and largest in layers V and VI where most cells respond to deflections of several adjacent whiskers, sometimes as many as 20 or more (see also Ref. 5). Moreover, under these conditions, cortical vibrissa units, like those in the periphery (79), r ...
Document
... • Pain originating in a visceral structure perceived as being from an area of skin innervated by the same segmental level as the visceral afferent • Results from convergence of somatic & visceral afferents on the same segmental level of the spinal cord • “Cross-talk” in the dorsal horn ...
... • Pain originating in a visceral structure perceived as being from an area of skin innervated by the same segmental level as the visceral afferent • Results from convergence of somatic & visceral afferents on the same segmental level of the spinal cord • “Cross-talk” in the dorsal horn ...
Spatial Responsiveness of Monkey Hippocampal Neurons to
... activity of neurons in the hippocampal formation of the conscious monkey was recorded during presentation of various visual and auditory stimuli from several directions around the monkey. Of 1,047 neurons recorded, 106 (10.1%) responded to some stimuli from one or more directions. Of these 106 neuro ...
... activity of neurons in the hippocampal formation of the conscious monkey was recorded during presentation of various visual and auditory stimuli from several directions around the monkey. Of 1,047 neurons recorded, 106 (10.1%) responded to some stimuli from one or more directions. Of these 106 neuro ...
Well That Frog Just Doesn`t Have The Nerve
... The average thickness was determined to be 7.1425 x 10^8 micrometers. This means that majority of the axons were approximately that size and a stimulus used to elicit those axons would produce the most CAPs (Freeman 1999). It is understood that CAPs are what lead to muscle movement and other sensory ...
... The average thickness was determined to be 7.1425 x 10^8 micrometers. This means that majority of the axons were approximately that size and a stimulus used to elicit those axons would produce the most CAPs (Freeman 1999). It is understood that CAPs are what lead to muscle movement and other sensory ...
Nociceptors: the sensors of the pain pathway
... where transduction of noxious stimuli occurs, and the uncertainty in model systems that an animal’s behavior is due to its perception of pain (15, 17). Although the morphology of sensory nociceptive nerve endings is highly conserved in animals from rodents to humans (5, 9, 17–19), cutaneous nocicep ...
... where transduction of noxious stimuli occurs, and the uncertainty in model systems that an animal’s behavior is due to its perception of pain (15, 17). Although the morphology of sensory nociceptive nerve endings is highly conserved in animals from rodents to humans (5, 9, 17–19), cutaneous nocicep ...
J Neurophysiol - University of Connecticut
... maximum deviation in the STRF or RTF. Best frequency (Hz) and peak latency (ms) are the spectral and temporal coordinates of the maximum deviation in the STRF (Fig. 1A, gray arrows). The spectrotemporal boundaries of an STRF feature were defined by a contour at 1/e times the maximum value. This thre ...
... maximum deviation in the STRF or RTF. Best frequency (Hz) and peak latency (ms) are the spectral and temporal coordinates of the maximum deviation in the STRF (Fig. 1A, gray arrows). The spectrotemporal boundaries of an STRF feature were defined by a contour at 1/e times the maximum value. This thre ...
A Dynamic Field Theory of Visual Recognition in Infant Looking... Gregor Schöner Sammy Perone () and John P. Spencer ()
... Figure 1 shows the architecture of the network. We describe here how the network processes and remembers a stimulus and how this process maps onto looking behavior. At the onset of stimulus presentation, the looking node receives transient, excitatory input via an attention-getting stimulus, turning ...
... Figure 1 shows the architecture of the network. We describe here how the network processes and remembers a stimulus and how this process maps onto looking behavior. At the onset of stimulus presentation, the looking node receives transient, excitatory input via an attention-getting stimulus, turning ...
Functional Properties of Parietal Visual Neurons: Mechanisms of
... PVNs are commonly large and bilateral, and at the limit some may fill the visual field; for many, the central zone of the visual field is spared when the fields are determined by stimuli that enter from the periphery and transit meridians. The receptive fields vary with the behavioral state, the ang ...
... PVNs are commonly large and bilateral, and at the limit some may fill the visual field; for many, the central zone of the visual field is spared when the fields are determined by stimuli that enter from the periphery and transit meridians. The receptive fields vary with the behavioral state, the ang ...
A direct quantitative relationship between the functional properties of
... motion perception in the human visual system requires appreciation of not only which visual areas participate in motion processing, but also how their responses vary with visual characteristics of the stimulus. Much of our current knowledge of physiological responses underlying human motion percepti ...
... motion perception in the human visual system requires appreciation of not only which visual areas participate in motion processing, but also how their responses vary with visual characteristics of the stimulus. Much of our current knowledge of physiological responses underlying human motion percepti ...
Starosta, S., Güntürkün, O., Stüttgen, M.C., Stimulus
... hopper was illuminated for 3 or 4 seconds (depending on the animal), and, provided food access during that interval with probability p, with p ranging from 0.6 to 0.8. On the other fraction of trials 1–p, the food hopper was illuminated for the same time but the food hopper was not activated (‘S+ fo ...
... hopper was illuminated for 3 or 4 seconds (depending on the animal), and, provided food access during that interval with probability p, with p ranging from 0.6 to 0.8. On the other fraction of trials 1–p, the food hopper was illuminated for the same time but the food hopper was not activated (‘S+ fo ...
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... 4 Features of sensory input direct receptive-field size and structure In the auditory system, receptive fields are described by tuning curves that quantify neural selectivity for tones over a limited range of frequency and intensity. Several investigators have demonstrated that these receptive fields c ...
... 4 Features of sensory input direct receptive-field size and structure In the auditory system, receptive fields are described by tuning curves that quantify neural selectivity for tones over a limited range of frequency and intensity. Several investigators have demonstrated that these receptive fields c ...
The representation of Kanizsa illusory contours in the monkey
... be removed from stimuli, revealing how the change affects recognition and neural processing. An extreme reduction is the removal of the very stimulus, defining it with illusory lines. Perceived boundaries without physical differences between shape and background are called illusory (or subjective) c ...
... be removed from stimuli, revealing how the change affects recognition and neural processing. An extreme reduction is the removal of the very stimulus, defining it with illusory lines. Perceived boundaries without physical differences between shape and background are called illusory (or subjective) c ...
Involvement of the Caudal Medulla in Negative Feedback
... were clearly smaller than those elicited by 4.8 cm2 . By contrast, in groups III and IV and in spinal animals, the responses elicited by the two stimulus areas did not appear to be different. Cumulative results concerning noxious-heat evoked-responses (expressed as mean firing rate during the 15 s) ...
... were clearly smaller than those elicited by 4.8 cm2 . By contrast, in groups III and IV and in spinal animals, the responses elicited by the two stimulus areas did not appear to be different. Cumulative results concerning noxious-heat evoked-responses (expressed as mean firing rate during the 15 s) ...
Article
... In this model, there is no explicit or linear measure of time like the tics of an oscillator or a continuously ramping firing rate (see Discussion; Durstewitz, 2003). Instead, time is implicitly encoded in the state of the network— defined not only by which neurons are spiking, but also by the prope ...
... In this model, there is no explicit or linear measure of time like the tics of an oscillator or a continuously ramping firing rate (see Discussion; Durstewitz, 2003). Instead, time is implicitly encoded in the state of the network— defined not only by which neurons are spiking, but also by the prope ...
Analyzing Neural Responses to Natural Signals: Maximally
... are relevant for setting the probability of generating a single spike at one moment in time. From an information-theoretic point of view, asking for stimulus features that capture the mutual information between the stimulus and the arrival times of single spikes is a well-posed question even if succ ...
... are relevant for setting the probability of generating a single spike at one moment in time. From an information-theoretic point of view, asking for stimulus features that capture the mutual information between the stimulus and the arrival times of single spikes is a well-posed question even if succ ...
Linking Neural Activity to Visual Perception: Separating Sensory and
... A receiver operating characteristic (ROC) analysis (Figure 2) was used to quantify the discrimination sensitivity of MT neurons in the 2AFC task (see Appendix). For this, two distributions of spike counts were compared against each other, the distribution of counts from trials when the coherent moti ...
... A receiver operating characteristic (ROC) analysis (Figure 2) was used to quantify the discrimination sensitivity of MT neurons in the 2AFC task (see Appendix). For this, two distributions of spike counts were compared against each other, the distribution of counts from trials when the coherent moti ...
The Plasticity of Denervated and Reinnervated Laryngeal
... significantly smaller than that of the control group at the early time points. However, beyond approximately 30 to 60 days, there was a progressive increase in fiber diameter. The main effects for the PCA muscle were time (P<.001), group (P<.001), and the timegroup interaction (P<.001). Similar main ...
... significantly smaller than that of the control group at the early time points. However, beyond approximately 30 to 60 days, there was a progressive increase in fiber diameter. The main effects for the PCA muscle were time (P<.001), group (P<.001), and the timegroup interaction (P<.001). Similar main ...
PAIN CONTROL THEORIES
... Pain Perceptions – based on expectations, past experience, anxiety, suggestions – Affective – one’s emotional factors that can affect pain experience – Behavioral – how one expresses or controls pain – Cognitive – one’s beliefs (attitudes) about pain ...
... Pain Perceptions – based on expectations, past experience, anxiety, suggestions – Affective – one’s emotional factors that can affect pain experience – Behavioral – how one expresses or controls pain – Cognitive – one’s beliefs (attitudes) about pain ...
Auditory Brain Development in Children With Hearing Loss– Part One
... homa Health Sciences Center signal of interest from competing noise—occurs in groups of and Salus University. Ms. Smith, neurons at all levels of the auditory nervous system. right, is a founder and the exFrom the primary auditory cortex, auditory signals travel to the ecutive director of Hearts for ...
... homa Health Sciences Center signal of interest from competing noise—occurs in groups of and Salus University. Ms. Smith, neurons at all levels of the auditory nervous system. right, is a founder and the exFrom the primary auditory cortex, auditory signals travel to the ecutive director of Hearts for ...
Some Fiber Projections to the Superior Colliculus in the Cat`
... with the exception of one region, above the chiasma and in its lateral wall immediately adjacent to the optic tract, where a small number of degenerated fibers were observed to pass. These latter appeared to be aberrant fibers of passage which showed no evidence of termination in this region. ...
... with the exception of one region, above the chiasma and in its lateral wall immediately adjacent to the optic tract, where a small number of degenerated fibers were observed to pass. These latter appeared to be aberrant fibers of passage which showed no evidence of termination in this region. ...