Christina T. Siwak, Ph.D.

Affiliations: 
2002 University of Toronto, Toronto, ON, Canada 
Area:
Behavioral Psychology, Physiological Psychology, Developmental Psychology, Pharmacology
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N W. Milgram grad student 2002 University of Toronto
 (Age -related changes in non-cognitive behaviours in a canine model of aging and dementia and therapeutic evaluation of adrafinil and modafinil.)
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Publications

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Tapp PD, Siwak CT. (2006) The Canine Model of Human Brain Aging: Cognition, Behavior, and Neuropathology Handbook of Models For Human Aging. 415-4
Siwak CT, Tapp PD, Head E, et al. (2005) Chronic antioxidant and mitochondrial cofactor administration improves discrimination learning in aged but not young dogs. Progress in Neuro-Psychopharmacology & Biological Psychiatry. 29: 461-9
Milgram NW, Head E, Zicker SC, et al. (2005) Learning ability in aged beagle dogs is preserved by behavioral enrichment and dietary fortification: a two-year longitudinal study. Neurobiology of Aging. 26: 77-90
Tapp PD, Siwak CT, Gao FQ, et al. (2004) Frontal lobe volume, function, and beta-amyloid pathology in a canine model of aging. The Journal of Neuroscience : the Official Journal of the Society For Neuroscience. 24: 8205-13
Tapp PD, Siwak CT, Head E, et al. (2004) Concept abstraction in the aging dog: development of a protocol using successive discrimination and size concept tasks. Behavioural Brain Research. 153: 199-210
Milgram NW, Head E, Zicker SC, et al. (2004) Long-term treatment with antioxidants and a program of behavioral enrichment reduces age-dependent impairment in discrimination and reversal learning in beagle dogs. Experimental Gerontology. 39: 753-65
Tapp D, Siwak CT, Gao FQ, et al. (2004) P3-066 Changes in frontal lobe volume, executive function, and amyloid load in a canine model of aging Neurobiology of Aging. 25: S371
Siwak CT, Tapp PD, Milgram NW. (2003) Adrafinil disrupts performance on a delayed nonmatching-to-position task in aged beagle dogs. Pharmacology, Biochemistry, and Behavior. 76: 161-8
Siwak CT, Tapp PD, Zicker SC, et al. (2003) Locomotor activity rhythms in dogs vary with age and cognitive status. Behavioral Neuroscience. 117: 813-24
Tapp PD, Siwak CT, Estrada J, et al. (2003) Effects of age on measures of complex working memory span in the beagle dog (Canis familiaris) using two versions of a spatial list learning paradigm. Learning & Memory (Cold Spring Harbor, N.Y.). 10: 148-60
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