Abstract:
BACKGROUND:Large animal models of human neurological disorders are advantageous compared to rodent models due to their neuroanatomical complexity, longevity and their ability to be maintained in naturalised environments. Some large animal models spontaneously develop behaviours that closely resemble the symptoms of neural and psychiatric disorders. The horse is an example of this; the domestic form of this species consistently develops spontaneous stereotypic behaviours akin to the compulsive and impulsive behaviours observed in human neurological disorders such as Tourette's syndrome. The ability to non-invasively probe normal and abnormal equine brain function through cognitive testing may provide an extremely useful methodological tool to assess brain changes associated with certain human neurological and psychiatric conditions. NEW METHOD:An automated operant system with the ability to present visual and auditory stimuli as well as dispense salient food reward was developed. To validate the system, ten horses were trained and tested using a standard cognitive task (three choice serial reaction time task (3-CSRTT)). RESULTS:All animals achieved total learning criterion and performed six probe sessions. Learning criterion was met within 16.30±0.79 sessions over a three day period. During six probe sessions, level of performance was maintained at 80.67±0.57% (mean±SEM) accuracy. COMPARISON WITH EXISTING METHOD(S):This is the first mobile fully automated system developed to examine cognitive function in the horse. CONCLUSIONS:A fully-automated operant system for mobile cognitive function of a large animal model has been designed and validated. Horses pose an interesting complementary model to rodents for the examination of human neurological dysfunction.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Roberts K,Hemmings AJ,McBride SD,Parker MOdoi
10.1016/j.jneumeth.2017.01.018subject
Has Abstractpub_date
2017-12-01 00:00:00pages
45-52eissn
0165-0270issn
1872-678Xpii
S0165-0270(17)30033-Xjournal_volume
292pub_type
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