Motoneurone discharges to the eyecup muscles of the crab Carcinus
dc.contributor.author | Burrows, M. | |
dc.contributor.author | Horridge, George Adrian | |
dc.date.accessioned | 2019-09-09T00:45:39Z | |
dc.date.available | 2019-09-09T00:45:39Z | |
dc.date.issued | 1968-10-01 | |
dc.description.abstract | Summary 1. During imposed tilt the eyecup or the crab tends to preserve an absolute position which depends upon the tonic activity of eight of the nine eyecup muscles. The detailed activity of all these muscles during imposed tilt in different planes has been recorded intracellularly. 2. The slow- and fast-motoneurone discharges to the eyecup muscles differ in that the former have intervals which are more variable at lower frequencies but the latter are more variable at higher frequencies. 3. The standard deviation of the interval between impulses is 20-30% of the mean interval for a wide range of frequencies of the tonic motoneurones. This large scatter is tolerable because the slow muscle fibres are sluggish and because the eyecup is also visually stabilized by a system of long time-constant. 4. In roll the two eyecups move in opposite directions relative to the midline of the animal. In pitch the two eyecups move in the same direction relative to the body of the animal, but in neither case is there a correlation between individual impulses to the muscles of the right and left eyecups which are active at the same time. 5. Possible mechanisms of linkage between the two eyecups are discussed. | en_AU |
dc.format.extent | 17 pages | en_AU |
dc.format.mimetype | application/pdf | |
dc.identifier.issn | 0022-0949 | en_AU |
dc.identifier.uri | http://hdl.handle.net/1885/165905 | |
dc.language.iso | en_AU | |
dc.provenance | http://sherpa.ac.uk/romeo/issn/0022-0949/ Author can archive publisher's version/PDF. Publisher's version/PDF may be used (Sherpa/Romeo as of 9/9/2019) | en_AU |
dc.publisher | Company of Biologists | en_AU |
dc.rights | © 1968 The Company of Biologists Ltd | en_AU |
dc.source | Journal of Experimental Biology | en_AU |
dc.subject | eyecup | en_AU |
dc.subject | crab | en_AU |
dc.subject | Carcinus | en_AU |
dc.subject | motoneurone | en_AU |
dc.subject | muscle | en_AU |
dc.title | Motoneurone discharges to the eyecup muscles of the crab Carcinus | en_AU |
dc.type | Journal article | en_AU |
dcterms.accessRights | Open Access | en_AU |
local.bibliographicCitation.issue | 2 | en_AU |
local.bibliographicCitation.lastpage | 267 | en_AU |
local.bibliographicCitation.startpage | 251 | en_AU |
local.contributor.affiliation | Horridge, George Adrian, Division of Biomedical Science and Biochemistry, CoS Research School of Biology, The Australian National University | en_AU |
local.contributor.authoremail | u690072@anu.edu.au | en_AU |
local.contributor.authoruid | Horridge, George Adrian, u690072 | en_AU |
local.description.notes | At the time of publication the author was affiliated with the Gatty Marine Laboratory and Department of Natural History, University of St Andrews, Fife, Scotland. | en_AU |
local.identifier.citationvolume | 49 | en_AU |
local.identifier.essn | 1477-9145 | en_AU |
local.identifier.uidSubmittedBy | u4579722 | en_AU |
local.publisher.url | https://www.biologists.com/ | en_AU |
local.type.status | Published Version | en_AU |
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