Biomaterial Database

Representations of the body surface by climbing fiber responses in the dorsal paraflocculus of the cat. 1988

L T Robertson, and S A Elias

Neurological Sciences Institute, Good Samaritan Hospital and Medical Center, Portland, OR 97210.

Mechanical stimulation elicited climbing fiber responses in 22% of the 377 Purkinje cells isolated in the dorsal paraflocculus of cats anesthetized with sodium pentobarbital. The responsive units were not evenly distributed throughout the dorsal paraflocculus. In the posterior division, 37% (65/177) of the cells had climbing fiber responses elicited by tactile stimulation, whereas in the lateral and accessory divisions the units were mainly unresponsive to tactile stimulation. Eleven of the 174 cells were responsive to tactile stimulation in the lateral division and only one climbing fiber response was driven in the 26 cells isolated in the accessory division. The climbing fiber representation was mainly of the ipsilateral forelimb and hindlimb with only a few responses representing the face. About half of the hindlimb representation was encountered in a patch located in the most medial part of the posterior division. No consistent location was identified between animals for the rest of the representations, which were intermingled among unresponsive units. The receptive fields of the majority of the forepaw and hindpaw representation included areas of the lateral toes; only a few responses represented the medial parts of the paw.

UI	MeSH Term	Description	Entries
D010812	Physical Stimulation	Act of eliciting a response from a person or organism through physical contact.	Stimulation, Physical,Physical Stimulations,Stimulations, Physical
D011689	Purkinje Cells	The output neurons of the cerebellar cortex.	Purkinje Cell,Purkinje Neuron,Purkyne Cell,Cell, Purkinje,Cell, Purkyne,Cells, Purkinje,Cells, Purkyne,Neuron, Purkinje,Neurons, Purkinje,Purkinje Neurons,Purkyne Cells
D001931	Brain Mapping	Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.	Brain Electrical Activity Mapping,Functional Cerebral Localization,Topographic Brain Mapping,Brain Mapping, Topographic,Functional Cerebral Localizations,Mapping, Brain,Mapping, Topographic Brain
D002415	Cats	The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)	Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D002531	Cerebellum	The part of brain that lies behind the BRAIN STEM in the posterior base of skull (CRANIAL FOSSA, POSTERIOR). It is also known as the "little brain" with convolutions similar to those of CEREBRAL CORTEX, inner white matter, and deep cerebellar nuclei. Its function is to coordinate voluntary movements, maintain balance, and learn motor skills.	Cerebella,Corpus Cerebelli,Parencephalon,Cerebellums,Parencephalons
D005121	Extremities	The farthest or outermost projections of the body, such as the HAND and FOOT.	Limbs,Extremity,Limb
D000200	Action Potentials	Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.	Spike Potentials,Nerve Impulses,Action Potential,Impulse, Nerve,Impulses, Nerve,Nerve Impulse,Potential, Action,Potential, Spike,Potentials, Action,Potentials, Spike,Spike Potential
D000344	Afferent Pathways	Nerve structures through which impulses are conducted from a peripheral part toward a nerve center.	Afferent Pathway,Pathway, Afferent,Pathways, Afferent
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia