Chapter 12
... – Compares the efferent project plan with execution at motor action site – Considers related factors and makes adjustments ...
... – Compares the efferent project plan with execution at motor action site – Considers related factors and makes adjustments ...
chapter 12 - cerebellum
... – Compares the efferent project plan with execution at motor action site – Considers related factors and makes adjustments ...
... – Compares the efferent project plan with execution at motor action site – Considers related factors and makes adjustments ...
Study Guide 3 Brain
... ______ Largest region of the brain; site of origin of conscious thought and intellectual functions; receives sensory information; directs voluntary or involuntary control over motor neurons ______ White matter that lies beneath the cerebral cortex and connects the cerebral hemispheres ______ Two par ...
... ______ Largest region of the brain; site of origin of conscious thought and intellectual functions; receives sensory information; directs voluntary or involuntary control over motor neurons ______ White matter that lies beneath the cerebral cortex and connects the cerebral hemispheres ______ Two par ...
Cerebellum
... vestibular nerve and vestibular nuclei; project to flocculonodular lobe and fastigial nucleus (coordinate head and eye movement. B. Spinocerebellar Fibers- arise from spinal cord -->via spinocerebellar tracts-->go to rostral lobe; makes cerebellum aware of ...
... vestibular nerve and vestibular nuclei; project to flocculonodular lobe and fastigial nucleus (coordinate head and eye movement. B. Spinocerebellar Fibers- arise from spinal cord -->via spinocerebellar tracts-->go to rostral lobe; makes cerebellum aware of ...
CEREBELLUM
... Inactivation of the interposed and dentate nuclei disrupt the precisely timed sequence of agonist and antagonist activation that follows external perturbation or voluntary movement. A: The records show position, velocity, and EMG responses in biceps and triceps of a trained monkey after the forearm ...
... Inactivation of the interposed and dentate nuclei disrupt the precisely timed sequence of agonist and antagonist activation that follows external perturbation or voluntary movement. A: The records show position, velocity, and EMG responses in biceps and triceps of a trained monkey after the forearm ...
Input to the Cerebellar Cortex
... 1.Climbing fibers originate in the inferior olive of the medulla (Olivocerebellar fibers) and project directly onto Purkinje cells, each Purkinje cell receives input from only one climbing fiber. It is believed that climbing fibers "condition" the Purkinje cells and modulate their ...
... 1.Climbing fibers originate in the inferior olive of the medulla (Olivocerebellar fibers) and project directly onto Purkinje cells, each Purkinje cell receives input from only one climbing fiber. It is believed that climbing fibers "condition" the Purkinje cells and modulate their ...
BGandcerebellum - UCSD Cognitive Science
... c. Neighboring patches can have representation of different body parts that are functionally related d. MF granule cell Purkinje cell pathway is a widely divergent system e. PC may receive information about sensory conditions, internal states, external states, and plans of the organism 2) Climbing ...
... c. Neighboring patches can have representation of different body parts that are functionally related d. MF granule cell Purkinje cell pathway is a widely divergent system e. PC may receive information about sensory conditions, internal states, external states, and plans of the organism 2) Climbing ...
Commentary on slides Lecture 16
... just behind the cortex. The cerebellum is connected with the vestibular system and spinal cord and with motor cortex. 3. These connections are carried via 3 large fiber bundles, the superior, middle and inferior cerebellar peduncles. In cross section (here mid-saggital) the cerebellum can be see to ...
... just behind the cortex. The cerebellum is connected with the vestibular system and spinal cord and with motor cortex. 3. These connections are carried via 3 large fiber bundles, the superior, middle and inferior cerebellar peduncles. In cross section (here mid-saggital) the cerebellum can be see to ...
Cerebellum_seminar
... Cerebellum (Latin, little brain): only 10 % total volume of the brain but more than half of all its neurons. arranged in a highly regular manner as repeating units but with input and outputs from different parts similar computational operations but on different inputs. the cerebellum is provid ...
... Cerebellum (Latin, little brain): only 10 % total volume of the brain but more than half of all its neurons. arranged in a highly regular manner as repeating units but with input and outputs from different parts similar computational operations but on different inputs. the cerebellum is provid ...
The Cerebellum
... 1. Flocculonodular lobe flocculus and nodule 2. Anterior lobe 3. Posterior lobe ...
... 1. Flocculonodular lobe flocculus and nodule 2. Anterior lobe 3. Posterior lobe ...
neurology_lab6_13_4_2011 - Post-it
... reticulospinal tract → motor neurons of anterior horn{ Fastigeal reticular pathway} -C-intermedeat zone to interposed nuclei{ Globose and emboliform in cerebllum}then to Contralateral red nucleus in brain stem → rubrospinal tract →motor neurons of anterior horn{ Globoseemboliform-rubral pathway} ...
... reticulospinal tract → motor neurons of anterior horn{ Fastigeal reticular pathway} -C-intermedeat zone to interposed nuclei{ Globose and emboliform in cerebllum}then to Contralateral red nucleus in brain stem → rubrospinal tract →motor neurons of anterior horn{ Globoseemboliform-rubral pathway} ...
9-5_Neuronal connections of the cerebellar cortex excitatory
... three layers, the granule cell layer that is deepest, the Purkinje cell layer that is in the middle and the molecular layer that is the most outer one. The motor information input travels from the spinal cord, cerebral cortex and vestibular system via mossy fibers. And all outgoing neural impulses f ...
... three layers, the granule cell layer that is deepest, the Purkinje cell layer that is in the middle and the molecular layer that is the most outer one. The motor information input travels from the spinal cord, cerebral cortex and vestibular system via mossy fibers. And all outgoing neural impulses f ...
Brain motor control
... • and others • sometimes they get worse from generation to generation (anticipation) ...
... • and others • sometimes they get worse from generation to generation (anticipation) ...
An adult is experiencing inferior alternating hemiplegia. Which
... B) Muscles of the lower face are weak on the right side. C) The protruded tongue deviates to the right side. D) Brisk DTRs are present in the right arm. E) Stroking the left foot produces a Babinski response. DTRs = deep tendon reflexes = muscle stretch reflexes ...
... B) Muscles of the lower face are weak on the right side. C) The protruded tongue deviates to the right side. D) Brisk DTRs are present in the right arm. E) Stroking the left foot produces a Babinski response. DTRs = deep tendon reflexes = muscle stretch reflexes ...
Cerebellar system and diseases
... Cerebellum does not initiate movement It contributes to coordination, precision, and accurate timing. It receives input from sensory systems and from other parts of the brain and spinal cord, It integrates these inputs to tune fine motor activity. Because of this fine-tuning function, Cerebe ...
... Cerebellum does not initiate movement It contributes to coordination, precision, and accurate timing. It receives input from sensory systems and from other parts of the brain and spinal cord, It integrates these inputs to tune fine motor activity. Because of this fine-tuning function, Cerebe ...
and by climbing fibers
... Stellate cells make inhibitory synapses on the dendrites of Purkinje cells. Parallel fibers activate Purkinje cells, basket cells, stellate cells, and Golgi cells. Basket cells inhibit relatively distant Purkinje cells. Golgi cells inhibit granular cells, decreasing their response to mossy fibers. ...
... Stellate cells make inhibitory synapses on the dendrites of Purkinje cells. Parallel fibers activate Purkinje cells, basket cells, stellate cells, and Golgi cells. Basket cells inhibit relatively distant Purkinje cells. Golgi cells inhibit granular cells, decreasing their response to mossy fibers. ...
The Cerebellum Anatomically consists of two hemispheres and
... the largest source of Mossy fibers which transmit information about muscle movements planned by cortex. 2.From olivary nucleus through olivocerebellar tract. From vestibular apparatus or from brainstem vestibular nuclei through vestibulocerebellar pathway. 3.From reticular formation through the reti ...
... the largest source of Mossy fibers which transmit information about muscle movements planned by cortex. 2.From olivary nucleus through olivocerebellar tract. From vestibular apparatus or from brainstem vestibular nuclei through vestibulocerebellar pathway. 3.From reticular formation through the reti ...
04/16 PPT - Molecular and Cell Biology
... • each parallel fiber projects to thousands of Purkinje cells (high divergence) • each Purkinje cell receives input from ~200,000 parallel fibers (high convergence) • Weak excitatory connection, spatiotemporal summation of inputs from many parallel fibers causes a single spike in Purkinje cell (call ...
... • each parallel fiber projects to thousands of Purkinje cells (high divergence) • each Purkinje cell receives input from ~200,000 parallel fibers (high convergence) • Weak excitatory connection, spatiotemporal summation of inputs from many parallel fibers causes a single spike in Purkinje cell (call ...
Dorsal View Ventral View Dorsal View
... Cerebellar Input and Output pathways INPUT-1: Mossy fibers, ascend through the cerebellar white matter and form excitatory synapses on granule cells Granule cells’ axons form parallel fibers, each of these fibers form excitatory synapses with numerous Purkinje Cells. All output from the cerebellar ...
... Cerebellar Input and Output pathways INPUT-1: Mossy fibers, ascend through the cerebellar white matter and form excitatory synapses on granule cells Granule cells’ axons form parallel fibers, each of these fibers form excitatory synapses with numerous Purkinje Cells. All output from the cerebellar ...
Neuronal Organization of the Cerebellar Cortex
... It is middle layer Contains Purkinje cells Output is always Inhibitory(secret GABA) ...
... It is middle layer Contains Purkinje cells Output is always Inhibitory(secret GABA) ...
ppt file
... The cerebellum ("little brain") has convolutions similar to those of cerebral cortex, only the folds are much smaller. Like the cerebrum, the cerebellum has an outer cortex, an inner white matter, and deep nuclei below the white matter. ...
... The cerebellum ("little brain") has convolutions similar to those of cerebral cortex, only the folds are much smaller. Like the cerebrum, the cerebellum has an outer cortex, an inner white matter, and deep nuclei below the white matter. ...
Cerebellum
The cerebellum (Latin for ""little brain"") is a region of the brain that plays an important role in motor control. It may also be involved in some cognitive functions such as attention and language, and in regulating fear and pleasure responses, but its movement-related functions are the most solidly established. The cerebellum does not initiate movement, but it contributes to coordination, precision, and accurate timing. It receives input from sensory systems of the spinal cord and from other parts of the brain, and integrates these inputs to fine-tune motor activity. Cerebellar damage produces disorders in fine movement, equilibrium, posture, and motor learning.Anatomically, the cerebellum has the appearance of a separate structure attached to the bottom of the brain, tucked underneath the cerebral hemispheres. Its cortical surface is covered with finely spaced parallel grooves, in striking contrast to the broad irregular convolutions of the cerebral cortex. These parallel grooves conceal the fact that the cerebellar cortex is actually a continuous thin layer of tissue tightly folded in the style of an accordion. Within this thin layer are several types of neurons with a highly regular arrangement, the most important being Purkinje cells and granule cells. This complex neural organization gives rise to a massive signal-processing capability, but almost all of its output passes through a set of small deep cerebellar nuclei lying in the interior of the cerebellum.In addition to its direct role in motor control, the cerebellum is necessary for several types of motor learning, most notably learning to adjust to changes in sensorimotor relationships. Several theoretical models have been developed to explain sensorimotor calibration in terms of synaptic plasticity within the cerebellum. Most of them derive from models formulated by David Marr and James Albus, which were based on the observation that each cerebellar Purkinje cell receives two dramatically different types of input: one type of input is made up of thousands of weak inputs from the parallel fibers; the other type is that of an extremely strong input from a single climbing fiber. The basic concept of the Marr–Albus theory is that the climbing fiber serves as a ""teaching signal"", which induces a long-lasting change in the strength of parallel fiber inputs. Observations of long-term depression in parallel fiber inputs have provided support for theories of this type, but their validity remains controversial.