The relative roles of vertices and sides in determining perceptual
... features of the objects. Some attempts have been made to understand how the two sets of characteristics might be interrelated. These studies have been concerned mainly with the influence of brightness distribution (Proffitt et al. 1983) and of some phenomenological aspects of visual figures on the l ...
... features of the objects. Some attempts have been made to understand how the two sets of characteristics might be interrelated. These studies have been concerned mainly with the influence of brightness distribution (Proffitt et al. 1983) and of some phenomenological aspects of visual figures on the l ...
Subconscious Stimulus Recognition and Processing During
... can occur during sleep. Subjects, who were motivated to awake by presenting a specific stimulus, awoke easier on these stimuli than non-motivated subjects. All experiments prove that the threshold for awakening is lower for relevant, than for non-relevant, stimuli. This phenomenon is also well known ...
... can occur during sleep. Subjects, who were motivated to awake by presenting a specific stimulus, awoke easier on these stimuli than non-motivated subjects. All experiments prove that the threshold for awakening is lower for relevant, than for non-relevant, stimuli. This phenomenon is also well known ...
Synchrony Unbound: Review A Critical Evaluation of
... and by Singer and his colleagues (Gray et al., 1989; Singer, 1993, 1994, 1999a; Singer and Gray, 1995; Engel et al., 1997; Roelfsema and Singer, 1998; HerculanoHouzel et al., 1999), into the “temporal binding hypothesis.” These authors extended von der Malsburg’s ideas by proposing that the solution ...
... and by Singer and his colleagues (Gray et al., 1989; Singer, 1993, 1994, 1999a; Singer and Gray, 1995; Engel et al., 1997; Roelfsema and Singer, 1998; HerculanoHouzel et al., 1999), into the “temporal binding hypothesis.” These authors extended von der Malsburg’s ideas by proposing that the solution ...
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 ...
Feeling others` painful actions: The sensorimotor
... painful consequences that result from others’ behavior, the brain needs to integrate action-related information (for example, reaching with the intention to grasp a knife) with pain-related information (for example, the recognition that the knife’s blade is dangerously sharp). Observing hand– object ...
... painful consequences that result from others’ behavior, the brain needs to integrate action-related information (for example, reaching with the intention to grasp a knife) with pain-related information (for example, the recognition that the knife’s blade is dangerously sharp). Observing hand– object ...
Contextual modulation of primary visual cortex by auditory signals
... and computational description, moreover, one which is integrated with biological constraints that we also do not yet fully understand. This stimulates questions such as what kind of neural signals are we searching for? What kinds of measurement techniques are optimal? What kinds of stimuli and tasks ...
... and computational description, moreover, one which is integrated with biological constraints that we also do not yet fully understand. This stimulates questions such as what kind of neural signals are we searching for? What kinds of measurement techniques are optimal? What kinds of stimuli and tasks ...
Somatic and Special Senses
... http://thebrain.mcgill.ca/flash/d/d_02/d_02_m/d_02_m_vis/d_02_m_vis_1a.jpg ...
... http://thebrain.mcgill.ca/flash/d/d_02/d_02_m/d_02_m_vis/d_02_m_vis_1a.jpg ...
Computational modeling of responses in human visual
... responses for a wide range of stimuli, and (b) to integrate neuroimaging measurements with data from other techniques (psychophysics, intracranial recordings, single-unit physiology, and so forth). To support these goals, neuroimaging designs for vision science use parametric variations of the stimu ...
... responses for a wide range of stimuli, and (b) to integrate neuroimaging measurements with data from other techniques (psychophysics, intracranial recordings, single-unit physiology, and so forth). To support these goals, neuroimaging designs for vision science use parametric variations of the stimu ...
Optometric Management Of A Patient With Parietal Lobe Injury
... In addition to the potential vision problems evident following ABI, other aspects of general sensorimotor function, cognitive function, and mood may be altered. Therefore, those with ABI often require interdisciplinary rehabilitative health care for both in- and out-patient stages. The interdiscipli ...
... In addition to the potential vision problems evident following ABI, other aspects of general sensorimotor function, cognitive function, and mood may be altered. Therefore, those with ABI often require interdisciplinary rehabilitative health care for both in- and out-patient stages. The interdiscipli ...
Corticothalamic feedback and sensory processing
... fields [36,37], identifying suppressive regions of VB receptive fields has been more difficult. Nevertheless, studies have shown that the spatial profile of VB receptive fields can expand (and sometimes contract) following inactivation of primary somatosensory cortex (Figure 3c [23,24]). Thus, at l ...
... fields [36,37], identifying suppressive regions of VB receptive fields has been more difficult. Nevertheless, studies have shown that the spatial profile of VB receptive fields can expand (and sometimes contract) following inactivation of primary somatosensory cortex (Figure 3c [23,24]). Thus, at l ...
Reflexes. Reaction time.
... sensory stimulus and the subsequent behavioral response • RT is fastest when there is only one possible response (simple reaction time) and becomes slower as additional response options are added (choice reaction time) • RT is slowing as the number of synapses increases • simplest reaction to stimul ...
... sensory stimulus and the subsequent behavioral response • RT is fastest when there is only one possible response (simple reaction time) and becomes slower as additional response options are added (choice reaction time) • RT is slowing as the number of synapses increases • simplest reaction to stimul ...
The Physiology of the Senses Lecture 6 Visually Guided Actions
... precise location of objects. In Figure 6.2 notice that bottom yellow bar looks shorter than the top one. But as you can see in the Figure 6.3 this is an illusion of the ventral stream. They are actually Figure 6. 3 The “What” Figure 6. 2 The “Where” the same length. If using the dorsal stream is sub ...
... precise location of objects. In Figure 6.2 notice that bottom yellow bar looks shorter than the top one. But as you can see in the Figure 6.3 this is an illusion of the ventral stream. They are actually Figure 6. 3 The “What” Figure 6. 2 The “Where” the same length. If using the dorsal stream is sub ...
![Responses to Odors Mapped in Snail Tentacle and Brain by [14C]](http://s1.studyres.com/store/data/017009313_1-932f7069dbfdd3fd3915bbe942d02b0f-300x300.png)
Responses to Odors Mapped in Snail Tentacle and Brain by [14C]
... groups (Plum et al., 1976; Sharp et al., 1981). By contrast, there have been hardly any applications of 2-DG autoradiography to invertebrate senso,y systems (Buchner et al., 1979; Buchner and Buchner, 1983; Rodrigues and Buchner, 1984). This may reflect, in part, the occurrence in some invertebrate ...
... groups (Plum et al., 1976; Sharp et al., 1981). By contrast, there have been hardly any applications of 2-DG autoradiography to invertebrate senso,y systems (Buchner et al., 1979; Buchner and Buchner, 1983; Rodrigues and Buchner, 1984). This may reflect, in part, the occurrence in some invertebrate ...
PDF hosted at the Radboud Repository of the Radboud University Nijmegen
... and plasticity, these concepts becoming central to understanding not only the ontogenetic development of the brain but also its actual functioning during adulthood. Moreover, this approach inspires a much more holistic view on neuronal information processing by highlighting, for instance, the depend ...
... and plasticity, these concepts becoming central to understanding not only the ontogenetic development of the brain but also its actual functioning during adulthood. Moreover, this approach inspires a much more holistic view on neuronal information processing by highlighting, for instance, the depend ...
Reflexive Monism final version December 2007
... world as described by modern physics (in terms of quantum mechanics, relativity theory and so on). However, it is the everyday physical world that we can see that we normally think of as public, objective and observer-independent in the ways outlined above. The observation that this phenomenal physi ...
... world as described by modern physics (in terms of quantum mechanics, relativity theory and so on). However, it is the everyday physical world that we can see that we normally think of as public, objective and observer-independent in the ways outlined above. The observation that this phenomenal physi ...
Chapter 3
... Four Elements of Classical Conditioning US – stimulus naturally causing the response UR – the natural response to a powerful stimulus CS –a stimulus that starts out neutral but gets associated with a powerful US CR – a learned response to a CS ...
... Four Elements of Classical Conditioning US – stimulus naturally causing the response UR – the natural response to a powerful stimulus CS –a stimulus that starts out neutral but gets associated with a powerful US CR – a learned response to a CS ...
Neural correlates of attention in primate visual cortex
... neuronal responses. Non-spatial attentional modulation ...
... neuronal responses. Non-spatial attentional modulation ...
The representation of Kanizsa illusory contours in the monkey
... Stimulus reduction is an effective way to study visual performance. Cues such as surface characteristics, colour and inner lines can 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 ...
... Stimulus reduction is an effective way to study visual performance. Cues such as surface characteristics, colour and inner lines can 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 ...
Motion Sensitivity
... Motion Sensitivity Visual Motion: Visual motion, at the most basic level, is a change in the position of a luminance pattern over time. The velocity is expressed in degrees of visual angle/second. Humans are very sensitive at detecting motion in visual images. The smallest motion that humans have be ...
... Motion Sensitivity Visual Motion: Visual motion, at the most basic level, is a change in the position of a luminance pattern over time. The velocity is expressed in degrees of visual angle/second. Humans are very sensitive at detecting motion in visual images. The smallest motion that humans have be ...
Sensory Regeneration in Arthropods: Implications of Homoeosis
... neurons proved to be less rigid than had been thought. The latter study not only showed that the cereal afferents failed to connect with their normal target cells when they encountered them outside the normal milieu of the terminal ganglion, perhaps because of the absence of potential sites for inpu ...
... neurons proved to be less rigid than had been thought. The latter study not only showed that the cereal afferents failed to connect with their normal target cells when they encountered them outside the normal milieu of the terminal ganglion, perhaps because of the absence of potential sites for inpu ...
fMR-adaptation reveals separate processing regions for the
... participants attended to the surface properties of the same objects, activation was present in more medial and anterior regions in the collateral sulcus (CoS) and the inferior occipital gyrus (IOG). We went on to demonstrate that attending explicitly to texture activated regions in the IOG and the C ...
... participants attended to the surface properties of the same objects, activation was present in more medial and anterior regions in the collateral sulcus (CoS) and the inferior occipital gyrus (IOG). We went on to demonstrate that attending explicitly to texture activated regions in the IOG and the C ...
File
... finding places to lay eggs, and/or monitoring their internal environments. Animals receive chemical information with special receptor neurons called chemoreceptors. Chemoreception can take a number of different forms, often depending on the environment an organism lives in. In humans and most terres ...
... finding places to lay eggs, and/or monitoring their internal environments. Animals receive chemical information with special receptor neurons called chemoreceptors. Chemoreception can take a number of different forms, often depending on the environment an organism lives in. In humans and most terres ...
The Constructive Nature of Visual Processing
... object shape can facilitate the association of visual elements into a unified percept (Figure 25–3). The brain analyzes a visual scene at three levels: low, intermediate, and high (Figure 25–4). At the lowest level, which we consider in the next chapter, visual attributes such as local contrast, ori ...
... object shape can facilitate the association of visual elements into a unified percept (Figure 25–3). The brain analyzes a visual scene at three levels: low, intermediate, and high (Figure 25–4). At the lowest level, which we consider in the next chapter, visual attributes such as local contrast, ori ...
Perception
""Percept"", ""perceptual"", ""perceptible"" and ""imperceptible"" redirect here. For the Brian Blade album, see Perceptual (album). For the perceptibility of digital watermarks, see Digital watermarking#Perceptibility. For other uses, see Perception (disambiguation) and Percept (disambiguation).Perception (from the Latin perceptio, percipio) is the organization, identification, and interpretation of sensory information in order to represent and understand the environment. All perception involves signals in the nervous system, which in turn result from physical or chemical stimulation of the sense organs. For example, vision involves light striking the retina of the eye, smell is mediated by odor molecules, and hearing involves pressure waves. Perception is not the passive receipt of these signals, but is shaped by learning, memory, expectation, and attention.Perception can be split into two processes Firstly processing sensory input which transforms these low-level information to higher-level information (e.g., extracts shapes for object recognition). Secondly processing which is connected with person's concept and expectations (knowledge), and selective mechanisms (attention) that influence perception.Perception depends on complex functions of the nervous system, but subjectively seems mostly effortless because this processing happens outside conscious awareness.Since the rise of experimental psychology in the 19th Century, psychology's understanding of perception has progressed by combining a variety of techniques. Psychophysics quantitatively describes the relationships between the physical qualities of the sensory input and perception. Sensory neuroscience studies the brain mechanisms underlying perception. Perceptual systems can also be studied computationally, in terms of the information they process. Perceptual issues in philosophy include the extent to which sensory qualities such as sound, smell or color exist in objective reality rather than in the mind of the perceiver.Although the senses were traditionally viewed as passive receptors, the study of illusions and ambiguous images has demonstrated that the brain's perceptual systems actively and pre-consciously attempt to make sense of their input. There is still active debate about the extent to which perception is an active process of hypothesis testing, analogous to science, or whether realistic sensory information is rich enough to make this process unnecessary.The perceptual systems of the brain enable individuals to see the world around them as stable, even though the sensory information is typically incomplete and rapidly varying. Human and animal brains are structured in a modular way, with different areas processing different kinds of sensory information. Some of these modules take the form of sensory maps, mapping some aspect of the world across part of the brain's surface. These different modules are interconnected and influence each other. For instance, taste is strongly influenced by smell.