Facial hair whorls (trichoglyphs) and the incidence of motor laterality in the horse

Murphy, Jack; Arkins, Seán

doi:10.1016/j.beproc.2008.03.006

Cited by 40 publications

(28 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, horses display a variety of patterns of hair colour (Woolf, 1997(Woolf, -1998, whorls (trichoglyphs) on their forehead and elsewhere (Murphy & Arkins, 2008) that are variously suggested by horse-people and horse lore to be related to disposition and trainability. In future studies, these suggestions could be tested by using such morphological features as independent variables to be assessed against success in performing reining manoeuvres.…”

Section: Discussionmentioning

confidence: 99%

“…Associated with different equestrian events, there is substantial interest in the relationship between anatomical form and behavioural function. This, in turn, has led to many reports of morphological and behavioural asymmetry in the horse, including asymmetries related to equine performance (Austin & Rogers, 2007De Boyer Des Roches, Richard-Yris, Henry, Ezzaouïa, & Hausberger, 2008;Farmer, Krueger, & Byrne, 2010;Lesniak, 2013;Lucidi et al, 2013;McGreevy & Rogers, 2004;Murphy & Arkins, 2008;Siniscalchi, Padalino, Aubé, & Quaranta, 2015;Williams & Norris, 2007;Woolf, 1997Woolf, -1998. One focus of these studies suggest that horses are more responsive to emotional provoking stimuli to their right nostril and in their left visual field, suggesting a right brain hemisphere lateralization of emotional responses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Absence of population asymmetry in the American Quarter Horse (Equus ferus caballus) performing skilled left and right manoeuvres in reining competition

Whishaw

2015

Laterality: Asymmetries of Body, Brain and Cognition

View full text Add to dashboard Cite

Use of the right hand by humans for speech-related hand gestures, writing and throwing exemplifies motoric asymmetry. There are reports of asymmetry in many other animal species, including reports of left preference in emotional responsivity, spontaneous behaviour and the trained performance of the horse, Equus ferus caballus. The present study used the novel approach of using judges' scores to examine asymmetry in an equestrian event. The study analysed the scores of five judges evaluating the reining performance of 482, three-year-old American Quarter Horses competing in a major competition. Reining requires that the horses perform the manoeuvres of spin, circle and stop directed to either the left or right and symmetrical performance is featured in the judging criteria. The scores were sensitive to performance level, sex and manoeuvre, but there was no evidence of a population asymmetry in the left vs. right direction of the manoeuvres. The results are discussed in relation to need of using a large number of subjects in measuring asymmetry, the expression of individual vs. population asymmetry as a function of morphological and behavioural measures, and the influence of behavioural training on asymmetry.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Absence of population asymmetry in the American Quarter Horse (Equus ferus caballus) performing skilled left and right manoeuvres in reining competition

Whishaw

2015

Laterality: Asymmetries of Body, Brain and Cognition

View full text Add to dashboard Cite

show abstract

“…Horses are subjected to intrastride asymmetry, motor laterality or sidedness (Klimke 1999;Murphy and Arkins 2008). Proposed factors are genetic and environmental (Murphy and Arkins 2008).…”

Section: Intrastride Asymmetrymentioning

confidence: 99%

Kinetics and kinematics of the horse comparing left and right rising trot

Roepstorff

Egenvall

Rhodin

et al. 2009

Equine Veterinary Journal

View full text Add to dashboard Cite

show abstract

“…In most studies related to equine laterality, the majority of horses were left-biased [15][16][17] . The use of the horse's left eye was found to correlate with higher reactivity 18,19 and negative emotional reactions 20 .…”

Section: Introductionmentioning

confidence: 99%

A comparison of rein tension of the rider's dominant and non-dominant hand and the influence of the horse's laterality

Kuhnke

Dumbell

Gauly

et al. 2010

Comp. Exerc. Physiol.

View full text Add to dashboard Cite

von Borstel (2010). A comparison of rein tension of the rider's dominant and non-dominant hand and the inuence of the horse's laterality. AbstractThe purpose of the present study was to investigate the effect of the horse's laterality on the symmetry of rein tension in right-handed riders. Eleven right-handed riders rode both a right-lateralized (RL) and a left-lateralized (LL) horse. Rein tension was measured during three circles of walk, trot and canter and four walk-halt transitions in each direction. Tensions were recorded continuously using a rein tension meter. The LL horse was ridden with significantly stronger mean tension in the left rein than in the right rein (1.5 vs. 1.4 kg; P ¼ 0.0352). Significantly more tension was applied to the outside rein in a clockwise (1.4 vs. 1.2 kg; P ¼ 0.0202), but not in a counterclockwise, direction (1.3 vs. 1.2 kg; P ¼ 0.49). Less minimum tension (0.06 vs. 0.29 kg) and greater maximum (6.4 vs. 3.9 kg) and range of tension (6.3 vs. 3.6 kg) occurred in the left rein of the RL horse (P , 0.0001) and the right rein of the LL horse (0.37 vs. 0.08 kg, 4.8 vs. 7.4 kg, 4.3 vs. 7.3 kg respectively; P , 0.0001). The results of the present study indicate that the different utilization of both reins is likely to be influenced by the laterality of both horse and rider. These findings may have important implications for equine training, since consistency of reinforcement is an important factor for equine learning success.

show abstract

Facial hair whorls (trichoglyphs) and the incidence of motor laterality in the horse

Cited by 40 publications

References 38 publications

Absence of population asymmetry in the American Quarter Horse (Equus ferus caballus) performing skilled left and right manoeuvres in reining competition

Absence of population asymmetry in the American Quarter Horse (Equus ferus caballus) performing skilled left and right manoeuvres in reining competition

Kinetics and kinematics of the horse comparing left and right rising trot

A comparison of rein tension of the rider's dominant and non-dominant hand and the influence of the horse's laterality

Contact Info

Product

Resources

About