Canonical computations of cerebral cortex
... might speculate that this difficult-to-characterize, dependent-yet-independent relationship between cognitive elements at higher and lower levels reflects something general about many cognitive processes and thus about cortical computation. How is invariant recognition achieved? While we do not know ...
... might speculate that this difficult-to-characterize, dependent-yet-independent relationship between cognitive elements at higher and lower levels reflects something general about many cognitive processes and thus about cortical computation. How is invariant recognition achieved? While we do not know ...
Auditory Hallucinations as a Separate Entitity
... no history of hallucinations and healthy volunteers20. A more recent functional magnetic resonance imaging (fMRI) study using a similar paradigm in another group of hallucinationprone participants again demonstrated normal activation of the left inferior frontal gyrus and attenuated activation of th ...
... no history of hallucinations and healthy volunteers20. A more recent functional magnetic resonance imaging (fMRI) study using a similar paradigm in another group of hallucinationprone participants again demonstrated normal activation of the left inferior frontal gyrus and attenuated activation of th ...
PREFRONTAL AND MEDIAL TEMPORAL LOBE INTERACTIONS IN
... neurons that show diminished responses to repeated stimuli25,26, whereas few such neurons have been found in the hippocampus27,28. The perirhinal cortex might have a role in perceptual as well as mnemonic processing, with evidence that complex feature conjunctions might be represented in this region ...
... neurons that show diminished responses to repeated stimuli25,26, whereas few such neurons have been found in the hippocampus27,28. The perirhinal cortex might have a role in perceptual as well as mnemonic processing, with evidence that complex feature conjunctions might be represented in this region ...
(2003). Prefrontal and medial temporal lobe interactions in
... neurons that show diminished responses to repeated stimuli25,26, whereas few such neurons have been found in the hippocampus27,28. The perirhinal cortex might have a role in perceptual as well as mnemonic processing, with evidence that complex feature conjunctions might be represented in this region ...
... neurons that show diminished responses to repeated stimuli25,26, whereas few such neurons have been found in the hippocampus27,28. The perirhinal cortex might have a role in perceptual as well as mnemonic processing, with evidence that complex feature conjunctions might be represented in this region ...
Signature - UNE Faculty/Staff Index Page
... Primary Sensory Cortex (S1, Areas 3,1,2) – cortex fold immediately posterior to central sulcus Sensory homunculus superimposed on gyrus Oriented with feet in longitudinal fissure, hips around apex of cortex, trunk superior, hand superolateral, head and face lateral, and oral cavity inferolateral (L. ...
... Primary Sensory Cortex (S1, Areas 3,1,2) – cortex fold immediately posterior to central sulcus Sensory homunculus superimposed on gyrus Oriented with feet in longitudinal fissure, hips around apex of cortex, trunk superior, hand superolateral, head and face lateral, and oral cavity inferolateral (L. ...
Bypassing V1: a direct geniculate input to area MT
... of higher extrastriate cortical areas. Historically, these regions were defined as ‘higher’ because they were not thought to receive direct geniculate input. In humans, loss of V1 devastates eyesight by cutting off the flow of visual information from the LGN to extrastriate visual cortex. Curiously, ...
... of higher extrastriate cortical areas. Historically, these regions were defined as ‘higher’ because they were not thought to receive direct geniculate input. In humans, loss of V1 devastates eyesight by cutting off the flow of visual information from the LGN to extrastriate visual cortex. Curiously, ...
From hand actions to speech: evidence and speculations
... This paper reviews experimental evidence and presents new data supporting the idea that human language may have evolved from hand/mouth action representation. In favor of this hypothesis are both anatomical and physiological supports. Among the anatomical ones, is the fact that the ...
... This paper reviews experimental evidence and presents new data supporting the idea that human language may have evolved from hand/mouth action representation. In favor of this hypothesis are both anatomical and physiological supports. Among the anatomical ones, is the fact that the ...
The evolution of brains from early mammals to humans
... umans have always been interested in their origins. Thus, nearly all cultures have stories about the origins of the first people. Seldom did these stories suggest that they came from other species, but instead held that our ancestors were always here in the spirit world, and they somehow became huma ...
... umans have always been interested in their origins. Thus, nearly all cultures have stories about the origins of the first people. Seldom did these stories suggest that they came from other species, but instead held that our ancestors were always here in the spirit world, and they somehow became huma ...
Vision
... Inability to discriminate among different hues; caused by damage to the visual association cortex. Inferior temporal cortex: In primates the highest level of the ventral stream of the visual association cortex; located on the inferior portion of the temporal lobe. ...
... Inability to discriminate among different hues; caused by damage to the visual association cortex. Inferior temporal cortex: In primates the highest level of the ventral stream of the visual association cortex; located on the inferior portion of the temporal lobe. ...
Microcircuits in visual cortex Kevan AC Martin
... Schematic of connectivity within the orientation map of visual cortex. Optical recordings of intrinsic signals rendered in false color provide striking images of the tangential organization of the cortical orientation map. The maps are generated by presenting stimuli at different orientations and re ...
... Schematic of connectivity within the orientation map of visual cortex. Optical recordings of intrinsic signals rendered in false color provide striking images of the tangential organization of the cortical orientation map. The maps are generated by presenting stimuli at different orientations and re ...
Context-dependent interpretation of words: Evidence for interactive
... processes in LIFG. The activation–selection hypothesis posits that ambiguous words such as hammer will automatically elicit semantic attributes associated with both common meanings regardless of context, consistent with earlier behavioral studies (Simpson, 1994). Regulatory or selection mechanisms i ...
... processes in LIFG. The activation–selection hypothesis posits that ambiguous words such as hammer will automatically elicit semantic attributes associated with both common meanings regardless of context, consistent with earlier behavioral studies (Simpson, 1994). Regulatory or selection mechanisms i ...
Review The Neural Basis of Perceptual Learning
... that training can improve the ability to make discriminations in a wide variety of sensory modalities; tasks involving visual acuity, somatosensory spatial resolution, discrimination of hue, estimation of weight, and discrimination of acoustical pitch all show improvement with practice (for review, ...
... that training can improve the ability to make discriminations in a wide variety of sensory modalities; tasks involving visual acuity, somatosensory spatial resolution, discrimination of hue, estimation of weight, and discrimination of acoustical pitch all show improvement with practice (for review, ...
Attention maps in the brain - Site BU
... Over 20 distinct cerebral cortical areas contain spatial map representations of the visual field. These retinotopic, or visuotopic, cortical areas occur not only in the occipital lobe but also in the parietal, temporal, and frontal lobes. The cognitive influences of visuospatial attention operate vi ...
... Over 20 distinct cerebral cortical areas contain spatial map representations of the visual field. These retinotopic, or visuotopic, cortical areas occur not only in the occipital lobe but also in the parietal, temporal, and frontal lobes. The cognitive influences of visuospatial attention operate vi ...
Relative timing: from behaviour to neurons
... signals. We propose an updated race process based on the integration of sensory evidence towards a decision threshold rather than simple signal propagation. The model suggests a general approach for identifying brain regions involved in relative timing, based on looking for trial-by-trial correlatio ...
... signals. We propose an updated race process based on the integration of sensory evidence towards a decision threshold rather than simple signal propagation. The model suggests a general approach for identifying brain regions involved in relative timing, based on looking for trial-by-trial correlatio ...
Auditory Brain Development in Children With Hearing Loss– Part One
... riving higher-order meaning from the sound we hear is cerareas of the brain. Specifically, activity in response to auditory tainly a complex process. “Fundamentally, everything that stimulation was observed both in primary and secondary audicomes into our minds reduces to patterns of neural activity ...
... riving higher-order meaning from the sound we hear is cerareas of the brain. Specifically, activity in response to auditory tainly a complex process. “Fundamentally, everything that stimulation was observed both in primary and secondary audicomes into our minds reduces to patterns of neural activity ...
Cross-modal and cross-temporal association in neurons of frontal
... evidence that the cell belongs to the cortical network representing the two associated stimuli in long-term memory (paired crossmodal association). Most units in the sample of 325 showed changes of ®ring frequency in temporal relation to one or more task events or periods, although most of these cha ...
... evidence that the cell belongs to the cortical network representing the two associated stimuli in long-term memory (paired crossmodal association). Most units in the sample of 325 showed changes of ®ring frequency in temporal relation to one or more task events or periods, although most of these cha ...
Multisensory anatomical pathways - Centre de Recherche Cerveau
... were initially focused on layer 4 according to the type of stimulation, suggesting that the somatosensory inputs are transmitted via a driving FF type connection. This contradicts the anatomical data which have revealed two sources of somatosensory inputs to the auditory belt: a weak direct projecti ...
... were initially focused on layer 4 according to the type of stimulation, suggesting that the somatosensory inputs are transmitted via a driving FF type connection. This contradicts the anatomical data which have revealed two sources of somatosensory inputs to the auditory belt: a weak direct projecti ...
asgn2d -- CEREBRAL CORTEX:
... T F Q2A. has two lobes, the anterior and the posterior The cerebral cortex is divided into many different areas, each of which is closely associated with its own set mental and behavioral functions. These functions are nothing like the ones phrenology proposed, and they are based on much better evid ...
... T F Q2A. has two lobes, the anterior and the posterior The cerebral cortex is divided into many different areas, each of which is closely associated with its own set mental and behavioral functions. These functions are nothing like the ones phrenology proposed, and they are based on much better evid ...
Negative BOLD in Sensory Cortices During
... retrieve an event or a visual image from memory. However the brain mechanisms behind this phenomenon remain poorly understood. Recently, we showed that during visual mental imagery, auditory areas show a much more robust deactivation than during visual perception. Here we ask whether this is a speci ...
... retrieve an event or a visual image from memory. However the brain mechanisms behind this phenomenon remain poorly understood. Recently, we showed that during visual mental imagery, auditory areas show a much more robust deactivation than during visual perception. Here we ask whether this is a speci ...
The role of ventral premotor cortex in action execution and action
... portion of the inferior frontal cortex, mainly in area 44 of Brodmann. According to our own data, there seems to be a homology between Brodmann area 44 in humans and the monkey area F5. The non-language related motor functions of Broca’s region comprise complex hand movements, associative sensorimot ...
... portion of the inferior frontal cortex, mainly in area 44 of Brodmann. According to our own data, there seems to be a homology between Brodmann area 44 in humans and the monkey area F5. The non-language related motor functions of Broca’s region comprise complex hand movements, associative sensorimot ...
accepted manuscript - Radboud Repository
... Non-invasive measuring methods such as EEG/MEG, fMRI and DTI are increasingly utilised to extract quantitative information on functional and anatomical connectivity in the human brain. These methods typically register their data in Euclidean space, so that one can refer to a particular activity patt ...
... Non-invasive measuring methods such as EEG/MEG, fMRI and DTI are increasingly utilised to extract quantitative information on functional and anatomical connectivity in the human brain. These methods typically register their data in Euclidean space, so that one can refer to a particular activity patt ...
- Stem-cell and Brain Research Institute
... used to determine the speaker’s intended prosodic attitudes [16]. These two dimensions are part of prosody, which is also expressed by modulation of amplitude and related spectral changes. In the current study, only the F0 component will be considered. The working hypothesis of this research is that ...
... used to determine the speaker’s intended prosodic attitudes [16]. These two dimensions are part of prosody, which is also expressed by modulation of amplitude and related spectral changes. In the current study, only the F0 component will be considered. The working hypothesis of this research is that ...
The dual-pathway model of auditory signal
... noise tracts sound localization; while lower part of IPL, posterior parts of middle and inferior frontal gyri were more activated bilaterally by sound localization than sound recognition. Passive listening to stimuli also yielded distinct activation patterns: MTG and posterior prefrontal cortex on b ...
... noise tracts sound localization; while lower part of IPL, posterior parts of middle and inferior frontal gyri were more activated bilaterally by sound localization than sound recognition. Passive listening to stimuli also yielded distinct activation patterns: MTG and posterior prefrontal cortex on b ...
19 CORTICAL PROJECTIONS FROM TWO PRESTRIATE AREAS IN
... In the visual system from retina to cortex the diversity of cell types as judged by their electrophysiological response properties may be explained by the repeated convergence of one group of cells upon another, using both excitatory and inhibitory mechanismsL Such a convergence starts within the la ...
... In the visual system from retina to cortex the diversity of cell types as judged by their electrophysiological response properties may be explained by the repeated convergence of one group of cells upon another, using both excitatory and inhibitory mechanismsL Such a convergence starts within the la ...
Elastic instabilities in a layered cerebral cortex: A revised axonal
... demonstrate that the intracortical buckling drives folding and not axonal tension from the underlying white matter, though the effect of growth of cells outside the cortex, i.e. new white matter, cannot be ruled out [5]. In addition, a quantitative model of buckling of an elastic plate (the top laye ...
... demonstrate that the intracortical buckling drives folding and not axonal tension from the underlying white matter, though the effect of growth of cells outside the cortex, i.e. new white matter, cannot be ruled out [5]. In addition, a quantitative model of buckling of an elastic plate (the top laye ...
Inferior temporal gyrus
The inferior temporal gyrus is placed below the middle temporal gyrus, and is connected behind with the inferior occipital gyrus; it also extends around the infero-lateral border on to the inferior surface of the temporal lobe, where it is limited by the inferior sulcus. This region is one of the higher levels of the ventral stream of visual processing, associated with the representation of complex object features, such as global shape. It may also be involved in face perception, and in the recognition of numbers.The inferior temporal gyrus is the anterior region of the temporal lobe located underneath the central temporal sulcus. The primary function of the inferior temporal gyrus - otherwise referenced as IT cortex - is associated with visual stimuli processing, namely visual object recognition, and has been suggested by recent experimental results as the final location of the ventral cortical visual system. The IT cortex in humans is also known as the Inferior Temporal Gyrus since it has been located to a specific region of the human temporal lobe. The IT processes visual stimuli of objects in our field of vision, and is involved with memory and memory recall to identify that object; it is involved with the processing and perception created by visual stimuli amplified in the V1, V2, V3, and V4 regions of the occipital lobe. This region processes the color and form of the object in the visual field and is responsible for producing the “what” from this visual stimuli, or in other words identifying the object based on the color and form of the object and comparing that processed information to stored memories of objects to identify that object.The IT cortex’s neurological significance is not just its contribution to the processing of visual stimuli in object recognition but also has been found to be a vital area with regards to simple processing of the visual field, difficulties with perceptual tasks and spatial awareness, and the location of unique single cells that possibly explain the IT cortex’s relation to memory.