ORGANIZATION OF CORTICAL AFFERENTS TO THE FRONTAL
... 3). In this case, a large injection was placed in the dorsal FAC zone, involving mainly the caudal prefrontal and partly the premotor cortices. A high concentration of reaction product was found on the dorsolateral surface of the caudal proreal gyrus (PR), the central precruciate area (XC) and a pa ...
... 3). In this case, a large injection was placed in the dorsal FAC zone, involving mainly the caudal prefrontal and partly the premotor cortices. A high concentration of reaction product was found on the dorsolateral surface of the caudal proreal gyrus (PR), the central precruciate area (XC) and a pa ...
Proprioceptive Eye Position Signals Are Still Missing a Sensory
... nuclei and establish en grappe motor terminals along MIFs, in a manner similar to that of the usual motor innervation of MIFs (Fig. 1). This finding runs contrary to the suggestion made that neurons giving rise to palisade endings and multiple motor contacts, respectively, form two distinct populati ...
... nuclei and establish en grappe motor terminals along MIFs, in a manner similar to that of the usual motor innervation of MIFs (Fig. 1). This finding runs contrary to the suggestion made that neurons giving rise to palisade endings and multiple motor contacts, respectively, form two distinct populati ...
Patterns of sensory intermodality relationships in the cerebral cortex
... In the tangential section, primary somatosensory cortex (Sl) and area S2 are recognized by their typical myelin dense appearance (Fig. 1A). The border between these two areas was determined according to Nissl stain cytoarchitecture (Welker, '71, '76; Welker and Sinha, '721, and by the lateral callos ...
... In the tangential section, primary somatosensory cortex (Sl) and area S2 are recognized by their typical myelin dense appearance (Fig. 1A). The border between these two areas was determined according to Nissl stain cytoarchitecture (Welker, '71, '76; Welker and Sinha, '721, and by the lateral callos ...
The human medial geniculate body
... tuning curves, and an unknown number of representations of the basilar membrane [l]. Moreover. the pattern of brain stem input to these divisions is different [4,42]. Thus, not all parts of the medial geniculate body can be considered as exclusively or equally auditory based on their connections, fo ...
... tuning curves, and an unknown number of representations of the basilar membrane [l]. Moreover. the pattern of brain stem input to these divisions is different [4,42]. Thus, not all parts of the medial geniculate body can be considered as exclusively or equally auditory based on their connections, fo ...
Effects of acetylcholine on neuronal properties in entorhinal cortex James G. Heys
... subdivision, which is delineated based upon differential connectivity with the dentate gyrus. The mEC projects to the middle one-third of the molecular layer of dentate gyrus whereas the lateral entorhinal cortex (lEC) projects to the outer one-third (Figure 1) (Steward, 1976; Van Groen et al., 1993 ...
... subdivision, which is delineated based upon differential connectivity with the dentate gyrus. The mEC projects to the middle one-third of the molecular layer of dentate gyrus whereas the lateral entorhinal cortex (lEC) projects to the outer one-third (Figure 1) (Steward, 1976; Van Groen et al., 1993 ...
REVIEWS - Institute for Applied Psychometrics
... presented. In experiments involving animals, the feedback is usually an appetitive stimulus (for example, food) or aversive stimulus (for example, footshock). In experiments that involve human participants, the feedback may take various forms, including verbal reward, gaining ‘points’ , and so on. ...
... presented. In experiments involving animals, the feedback is usually an appetitive stimulus (for example, food) or aversive stimulus (for example, footshock). In experiments that involve human participants, the feedback may take various forms, including verbal reward, gaining ‘points’ , and so on. ...
Organization of Cortical and Thalamic Input to Pyramidal Neurons in
... circuit mechanisms involved in regulating movement. We used channelrhodopsin-2-assisted circuit mapping to characterize the longrange excitatory synaptic connections made by multiple cortical and thalamic areas onto pyramidal neurons in mouse vibrissal motor cortex (vM1). Each projection innervated ...
... circuit mechanisms involved in regulating movement. We used channelrhodopsin-2-assisted circuit mapping to characterize the longrange excitatory synaptic connections made by multiple cortical and thalamic areas onto pyramidal neurons in mouse vibrissal motor cortex (vM1). Each projection innervated ...
Cortical Connectivity Suggests a Role in Limb
... animals were secured to a stereotaxic frame, and the dorsal surface of the superior parietal lobule was exposed. Injection sites were selected by direct visualization of the cortex and were assigned to areas after histological examination of postmortem material. Surgical procedures took place in sta ...
... animals were secured to a stereotaxic frame, and the dorsal surface of the superior parietal lobule was exposed. Injection sites were selected by direct visualization of the cortex and were assigned to areas after histological examination of postmortem material. Surgical procedures took place in sta ...
Motor learning in man: A review of functional and clinical studies
... has been shown in several studies where subjects had to learn the task without external feedback, such as drawing tasks (Seitz et al., 1997; Van Mier et al., 1999). There is indication that activation of the right PMC also reflects spatial processing which may be important during early motor learning ...
... has been shown in several studies where subjects had to learn the task without external feedback, such as drawing tasks (Seitz et al., 1997; Van Mier et al., 1999). There is indication that activation of the right PMC also reflects spatial processing which may be important during early motor learning ...
PDF - Folia Biologica
... vertebrate brain. This complicated process peaked in the human brain. In the human neocortex are deposited structural and functional mechanisms of language, thinking, planning and other cognitive functions that significantly differentiate human beings from other mammals. Mammalian neocortex consists ...
... vertebrate brain. This complicated process peaked in the human brain. In the human neocortex are deposited structural and functional mechanisms of language, thinking, planning and other cognitive functions that significantly differentiate human beings from other mammals. Mammalian neocortex consists ...
Read Article - University of Northern Colorado
... comparisons. Individual laboratories develop highly reliable protocols for such boundary determination, but these protocols are not standardized and are challenging to adapt between sites. Despite the difficulties inherent with manually traced structural MRI studies, a small number of findings appea ...
... comparisons. Individual laboratories develop highly reliable protocols for such boundary determination, but these protocols are not standardized and are challenging to adapt between sites. Despite the difficulties inherent with manually traced structural MRI studies, a small number of findings appea ...
angol tézisfüzet0531
... The retrograde tracer cholera toxin β subunit (CTB; List Biological Laboratories) was injected into specific brain regions where the majority of PHAL/pro-TRHcontaining, double-labeled axons were found in the anterograde tract-tracing experiment (0.5% CTB, 6.0 µamps for 11-15 min, pulsed at 7 second ...
... The retrograde tracer cholera toxin β subunit (CTB; List Biological Laboratories) was injected into specific brain regions where the majority of PHAL/pro-TRHcontaining, double-labeled axons were found in the anterograde tract-tracing experiment (0.5% CTB, 6.0 µamps for 11-15 min, pulsed at 7 second ...
Dopamine`s Actions in Primate Prefrontal Cortex
... from DA “salience cells” that respond to aversive as well as rewarding stimuli. dlPFC Delay cells generate persistent representations of visual spatial position across the delay epoch and are thought to be concentrated in deep layer III (and possibly superficial layer V), whereas Response-related ce ...
... from DA “salience cells” that respond to aversive as well as rewarding stimuli. dlPFC Delay cells generate persistent representations of visual spatial position across the delay epoch and are thought to be concentrated in deep layer III (and possibly superficial layer V), whereas Response-related ce ...
Auris Nasus Larynx 34 (2008) 1-10
... Sufficient morphologic, physiologic and clinical evidence has accumulated in the past few decades to indicate an organization in the vestibular system that may account for different forms of vertigo depending on the location of pathology in the vestibular nerve. The evidence supporting such a "place ...
... Sufficient morphologic, physiologic and clinical evidence has accumulated in the past few decades to indicate an organization in the vestibular system that may account for different forms of vertigo depending on the location of pathology in the vestibular nerve. The evidence supporting such a "place ...
Long latency EMG responses in hand and leg muscles
... established in man,'`3 but the pathway responsible for these responses is still debated.4 5 Based on clinical evidence there are several reasons to assume a supraspinal origin, at least for responses recorded from distal hand muscles.3 6 If so, the question arises, which supraspinal structures are e ...
... established in man,'`3 but the pathway responsible for these responses is still debated.4 5 Based on clinical evidence there are several reasons to assume a supraspinal origin, at least for responses recorded from distal hand muscles.3 6 If so, the question arises, which supraspinal structures are e ...
A local circuit approach to understanding integration of
... might be reconciled by invoking dramatic state changes in local neurons or in long-distance synapses. Here we show that local cortical circuitry is sufficient to explain these receptive field ‘switching’ effects, provided that some contrast-related asymmetr y between local cortical excitatory and in ...
... might be reconciled by invoking dramatic state changes in local neurons or in long-distance synapses. Here we show that local cortical circuitry is sufficient to explain these receptive field ‘switching’ effects, provided that some contrast-related asymmetr y between local cortical excitatory and in ...
The Thalamic Projections of the Spinothalamic Tract
... part of the ventro-posterior-lateral nucleus” [64,65], “magnocellular medial geniculate” [89], “suprageniculate nucleus,” or “posterior nuclear group” [73]. Thus, in 1965 Mehler could state that “neurological and clinical neurophysiological observations cast serious doubt on the classical notion tha ...
... part of the ventro-posterior-lateral nucleus” [64,65], “magnocellular medial geniculate” [89], “suprageniculate nucleus,” or “posterior nuclear group” [73]. Thus, in 1965 Mehler could state that “neurological and clinical neurophysiological observations cast serious doubt on the classical notion tha ...
Temporal and Spatial Integration in the Rat SI Vibrissa Cortex
... elements that is swept back and forth through the sensory environment during exploratory tactile behavior (62, 68). The follicles of each of the vibrissal hairs are innervated by as many as 200 large myelinated axons whose parent cell bodies are located in the trigeminal ganglion (63; see also Ref. ...
... elements that is swept back and forth through the sensory environment during exploratory tactile behavior (62, 68). The follicles of each of the vibrissal hairs are innervated by as many as 200 large myelinated axons whose parent cell bodies are located in the trigeminal ganglion (63; see also Ref. ...
Olfactory System Anatomy
... The cribriform plate of the ethmoid bone, separated at the midline by the crista galli, contains multiple small foramina through which the olfactory nerve fibers, or fila olfactoria, traverse. Fracture of the cribriform plate in traumatic settings can disrupt these fine fibers and lead to olfactory ...
... The cribriform plate of the ethmoid bone, separated at the midline by the crista galli, contains multiple small foramina through which the olfactory nerve fibers, or fila olfactoria, traverse. Fracture of the cribriform plate in traumatic settings can disrupt these fine fibers and lead to olfactory ...
The effects of normal aging on myelin and nerve fibers: A review
... a loss of cortical neurons. It is now known that significant numbers of cortical neurons are not lost and other bases for the cognitive decline have been sought. One contributing factor may be changes in nerve fibers. With age some myelin sheaths exhibit degenerative changes, such as the formation o ...
... a loss of cortical neurons. It is now known that significant numbers of cortical neurons are not lost and other bases for the cognitive decline have been sought. One contributing factor may be changes in nerve fibers. With age some myelin sheaths exhibit degenerative changes, such as the formation o ...
Neural Interaction in Cat Primary Auditory Cortex. Dependence on
... “noise” from the newly formed synaptic connections. ...
... “noise” from the newly formed synaptic connections. ...
the distribution of the cells of origin of callosal projections in cat
... examined in retinotopically defined areas of cat visual cortex. As many callosal neurons as possible were labeled in a single animal by surgically dividing the posterior two-thirds of the corpus callosum and exposing the cut ends of callosal axons to horseradish peroxidase. The distribution of callo ...
... examined in retinotopically defined areas of cat visual cortex. As many callosal neurons as possible were labeled in a single animal by surgically dividing the posterior two-thirds of the corpus callosum and exposing the cut ends of callosal axons to horseradish peroxidase. The distribution of callo ...
Neurotransmitter Profile of Saccadic Omnipause Neurons in
... the burst neurons to activate the extraocular eye muscle motoneurons and results in a saccade. In current models the superior colliculus (SC) is thought to exert a strong control over the trigger for saccade gcncration. In addition to a monosynaptic excitatory input to OPNs (Raybourn and Keller, 197 ...
... the burst neurons to activate the extraocular eye muscle motoneurons and results in a saccade. In current models the superior colliculus (SC) is thought to exert a strong control over the trigger for saccade gcncration. In addition to a monosynaptic excitatory input to OPNs (Raybourn and Keller, 197 ...
Pathways for emotions and memory prefrontal cortices in the rhesus monkey
... 38 (1937) 725]. The goal of this study was to determine the anatomic interaction of the anterior nuclei with distinct prefrontal cortices that have been implicated in emotion and specific aspects of memory. To address this issue, we investigated the relationship of input and output zones in the ante ...
... 38 (1937) 725]. The goal of this study was to determine the anatomic interaction of the anterior nuclei with distinct prefrontal cortices that have been implicated in emotion and specific aspects of memory. To address this issue, we investigated the relationship of input and output zones in the ante ...
Locus coeruleus - Rice CAAM Department
... neurons in this area. This area of the brain is also intimately involved in REM sleep. Psychiatric research has documented that enhanced noradrenergic postsynaptic responsiveness in the neuronal pathway (brain circuit) that originates in the locus coeruleus and end in the basolateral nucleus of the ...
... neurons in this area. This area of the brain is also intimately involved in REM sleep. Psychiatric research has documented that enhanced noradrenergic postsynaptic responsiveness in the neuronal pathway (brain circuit) that originates in the locus coeruleus and end in the basolateral nucleus of the ...
Anatomy of the cerebellum
The anatomy of the cerebellum can be viewed at three levels. At the level of large-scale anatomy, the cerebellum consists of a tightly folded and crumpled layer of cortex, with white matter underneath, several deep nuclei embedded in the white matter, and a fluid-filled ventricle in the middle. At the intermediate level, the cerebellum and its auxiliary structures can be decomposed into several hundred or thousand independently functioning modules or ""microzones"". At the microscopic level, each module consists of the same small set of neuronal elements, laid out with a highly stereotyped geometry.