| Response variations of neurons in the lateral geniculate body of the freely moving rat. | |
| | |
MedLine Citation:
|
PMID: 7424597 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The influence of the motivational state on the discharge rate and flash evoked activity of 57 single units of the dorsal lateral geniculate body (LGB) was investigated using extracellular microelectrodes. Flashes were presented either alone (control group) or followed by water reinforcement (trained group). With decreasing thirst motivation the background activity of most of the cells of both groups changed. This change consisted mainly in a decrease of the discharge rate. After satiation two thirds of the cells exhibited response variations to light stimuli. In trained thirsty animals in 10 out of 19 cells these changes were of very high degree, as the usual response pattern consisting in a sequence of excitatory and inhibitory phases was lost. Under such conditions the light acted as a conditioned stimulus in the thirsty animal. Nonvisual stimuli preceding the flashes and evoking inhibiton of the reflex behavior in trained rats produced small response modulations in about two thirds of the cells of either animal group. The assumption is made that the motivational state of the animal or environmental stimuli not belonging to the original conditioned stimulus - unconditioned stimulus (CS-US) paradigm are less effective in producing response changes of cells to physically equal stimuli than the biological relevance of the stimulus. |
| | |
Authors:
|
D Albrecht; H Davidowa; H J Gabriel; A K Malikowa; W Rüdiger |
Related Documents
:
|
7121717 - Ketone-body utilization by homogenates of adult rat brain. 2876817 - Rearing rats (rattus norvegicus) at 30 degrees c does not alter sensitivity to noradren... 1205557 - Effects of heat--stress in rats: critical period and reduced survival of post-implantat... 3337747 - The effect of hyperthermia on ornithine decarboxylase activity in different rat tissues. 1975657 - Peripubertal changes in the nature of the gnrh response to alpha-adrenoceptor stimulati... 1447717 - Enhanced rectal absorption and reduced local irritation of the anti-inflammatory drug e... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Acta neurobiologiae experimentalis Volume: 40 ISSN: 0065-1400 ISO Abbreviation: Acta Neurobiol Exp (Wars) Publication Date: 1980 |
Date Detail:
|
Created Date: 1980-12-18 Completed Date: 1980-12-18 Revised Date: 2011-01-07 |
Medline Journal Info:
|
Nlm Unique ID: 1246675 Medline TA: Acta Neurobiol Exp (Wars) Country: POLAND |
Other Details:
|
Languages: eng Pagination: 463-78 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Conditioning, Classical / physiology* Geniculate Bodies / cytology* Light Motivation / physiology Rats Satiety Response / physiology Sensory Receptor Cells / physiology* Thirst / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Structures involved in acquisition and performance of visually guided movements in the cat.
Next Document: Effects of reversible elimination of some bulbar structures on the generation of respiratory pattern...