Biomaterial Database

[Reactions of neurons in the associative thalamic nuclei to peripheral stimulation of different modality]. 1978

V N Kazakov, and L M Kazennova

Reactions of 252 neurons of the mediodorsal nucleus (MD) and 329 cells of the pulvinar-posterior-lateral complex (Pulv-LP) of the thalamus to separate the complex peripheral stimulations (visual, auditory and somatosensory) were studied in acute experiments on cats anaesthetized with a mixture of chloralose and nembutal. According to the character of the neuronal responses to peripheral stimuli three types of reactions were found: acceleration of the background activity (32.0% neurons in Pulv-LP and 20.6% in MD), inhibition (21.0% neurons in Pulv-LP and 24.2% in MD) and mixed (8.8% neurons in Pulv-LP and 4.0% in MD). No responses were observed in 37.4% neurons of Pulv-LP and in 51.2% of MD. Along with certain similarity, some specific features in the organization of Pulv-LP and MD were found. According to the response latency, the neuronal reactions to stimulation were divided into three groups: with short (less than 20 ms), medium (21--40 ms) and long (over 41 ms) latent period. The second group was the most numerous.

UI	MeSH Term	Description	Entries
D011930	Reaction Time	The time from the onset of a stimulus until a response is observed.	Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
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
D004594	Electrophysiology	The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
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
D001307	Auditory Perception	The process whereby auditory stimuli are selected, organized, and interpreted by the organism.	Auditory Processing,Perception, Auditory,Processing, Auditory
D012677	Sensation	The process in which specialized SENSORY RECEPTOR CELLS transduce peripheral stimuli (physical or chemical) into NERVE IMPULSES which are then transmitted to the various sensory centers in the CENTRAL NERVOUS SYSTEM.	Sensory Function,Organoleptic,Function, Sensory,Functions, Sensory,Sensations,Sensory Functions
D013787	Thalamic Nuclei	Several groups of nuclei in the thalamus that serve as the major relay centers for sensory impulses in the brain.	Nuclei, Thalamic
D014796	Visual Perception	The selecting and organizing of visual stimuli based on the individual's past experience.	Visual Processing,Perception, Visual,Processing, Visual