dc.contributor.author
Lewin, Walter
dc.date.accessioned
2018-06-08T01:47:25Z
dc.date.available
2000-12-14T00:00:00.649Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/13882
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-18080
dc.description
Die komplette Dissertation im pdf-Format (7.328.447 Bytes):
lewin.pdf
dc.description.abstract
The technical development towards digital multi-channel EEG-devices is
combined with advantages in data reproduction and display compared with paper-
writing EEG-devices. This opens new possibilities of EEG registration and
evaluation. Therefore the possibility of a non-invasive
electroencephalographic examination of the awake standing horse was
investigated.
Based on the anatomical situation of the skull of the horse an electrode
holding cape was developed. The uniform and easy repeatable electrode
positioning makes it possible to register the EEG free of pain for the animal
by using skin electrodes. In order to obtain an appropriate display of the
EEG-activity as well as other sources of bioelectrical activity, recording
programs with the crucial setting parameters were developed for a suitable
data representation on the screen. This was a basic requirement to
differentiate the electrical brain activity that is - on the head surface - in
the lower µV-range from artefact influences which can not be avoided in the
awake standing horse.
The investigations were carried out in 22 horses in their usual environment
(stable) on three different occasions. The visual evaluations of the EEG-
traces on the screen as well as the quantitative data analysis on the computer
were performed. The determination of the Hjorth-Parameters (activity,
mobility, complexity) and the frequency spectra in 1-Hz-steps between 0 and
42Hz were carried out using 3 representative 4-second-segments for each EEG-
record. Apart from finding reference parameters regarding positioning of the
EEG-electrodes, the individuality of the EEG, known from human beings, could
be found after repeated measurements in the adult horse during relaxed
wakefulness.
Furthermore single investigations on 14 foals showed that the EEG of the
juvenile horse is significantly different from that of the adult horse. This
agrees with the findings in humans where an adequate maturation of the
electrical brain activity in children is known.
Both the individuality and reproducibility in adult horses, as well as their
differences to the EEG in foals, suggest that the use of this non-invasive
method seems to be possible in the neurological diagnosis of pathological
changes in the electrical brain activity in horses.
en
dc.rights.uri
http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen
dc.subject
electroencephalography
dc.subject
electroencephalograms
dc.subject
diagnostic-techniques
dc.subject.ddc
600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche
dc.title
Eine Methode zur nichtinvasiven EEG-Ableitung am wachen, stehenden Pferd
dc.contributor.firstReferee
Univ.-Prof. Dr. H. Tönhardt
dc.contributor.furtherReferee
OMR Prof. Dr. W. Bousseljot
dc.contributor.furtherReferee
Univ.-Prof. Dr. N.-C. Juhr
dc.date.accepted
1998-01-30
dc.date.embargoEnd
2001-02-06
dc.identifier.urn
urn:nbn:de:kobv:188-1998000632
dc.title.translated
A method of non-invasive EEG-recording in the awake standing horse
en
refubium.affiliation
Veterinärmedizin
de
refubium.mycore.fudocsId
FUDISS_thesis_000000000052
refubium.mycore.transfer
http://www.diss.fu-berlin.de/1998/63/
refubium.mycore.derivateId
FUDISS_derivate_000000000052
dcterms.accessRights.dnb
free
dcterms.accessRights.openaire
open access