Linked Life Data

2819421

Source:http://linkedlifedata.com/resource/pubmed/id/2819421

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1990-1-11
pubmed:abstractText
The influence of electrical stimulation of the superior colliculus (SC) on acoustically evoked responses of inferior collicular (IC) neurons was examined in 24 barbiturate-anesthetized Rufous horseshoe bats, Rhinolophus rouxi. Acoustic stimuli (50 ms, 0.5 ms rise-decay times) were delivered from a loudspeaker placed 68 cm in front of each bat and a total of 354 IC neurons were isolated. The response latencies of these neurons were mainly between 7.5 and 17.5 ms. When the ipsilateral SC was electrically stimulated, responses of 227 (64%) neurons were not affected, but responses of the remaining (127 neurons, 36%) were either inhibited (102 neurons, 29%) or facilitated (25 neurons, 7%). The degree of inhibition and the response latency of the inhibited neurons increased with the amplitude of electrical stimulation. Inhibition of a neuron's activity was also dependent upon the time interval between acoustic and electrical stimuli. The best inhibitory latency measured at maximal inhibition was between 12 and 20 ms. Conversely, facilitation shortened the response latency of IC neurons and the degree of facilitation increased with the amplitude of the acoustic stimulus. Since the SC plays an essential role in orienting an animal's responses toward sensory stimuli, our findings suggest that the SC may affect the processing of acoustic signals in the auditory system during acoustically guided orientation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0006-8993
pubmed:author
pubmed:issnType
Print
pubmed:day
18
pubmed:volume
497
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
214-22
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Electrical stimulation of bat superior colliculus influences responses of inferior collicular neurons to acoustic stimuli.
pubmed:affiliation
Department of Biology, East China Normal University, Shanghai, People's Republic of China.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't