Journal Articles

Klassen, N. R., Bamford, L. E., & Karl, J. M. (2023). Peri-Hand Space: A Helping Hand for Object Recognition in Children. Journal of Experimental Psychology: Human Perception & Performance, 49(4), 512-522. doi:10.1037/xhp0001111 (Pre-Print)

Bamford, L. E., Klassen, N. R., & Karl, J. M. (2020). Faster recognition of graspable objects defined by orientation in a visual search task. Experimental Brain Research, 238(4), 905-916. doi:10.1007/s00221-020-05769-z (PDF)

Kuntz, J. R., Karl, J. M., Doan, J. B., Grohs, M., & Whishaw, I. Q. (2020). Two types of memory-based (pantomime) reaches distinguished by gaze anchoring in reach-to-grasp tasks. Behavioral Brain Research, 381, 112438. doi: 10.1016/j.bbr.2019.112438 (PDF)

Karl, J. M., Slack, B. M., Wilson, A. M., Wilson, C. A., & Bertoli, M. E. (2019). Increasing task precision demands reveals that the reach and grasp remain subject to different perception-action constraints in 12-month-old human infants. Infant Behavior and Development, 57, 101382. doi:10.1016/j.infbeh.2019.101382 (PDF)

Karl, J. M., Wilson, A. M., Bertoli, M. E., Shubear, N. S. (2018). Touch the table before the target: Contact with an underlying surface may assist the development of precise visually controlled reach and grasp movements in human infants. Experimental Brain Research, 236(8), 2185-2207. doi:10.1007/s00221-018-5293-4 (PDF)

Kuntz, J. R., Karl, J. M., Doan, J. B., Whishaw, I. Q. (2018). Gaze anchoring guides real but not pantomime reach-to-grasp: support for the action–perception theory. Experimental Brain Research, 236(4), 1091-1103. doi:10.1007/s00221-018-5196-4 (PDF)

Karl, J. M., Kuntz, J. R., Lenhart, L. A., & Whishaw, I. Q. (2018). Frame-by-frame video analysis for the quantification of idiosyncratic reach-to-grasp movements in humans. Journal of Visualized Experiments, 131, e56733. doi:10.3791/56733 (PubMed)

Whishaw, I. Q., Karl, J. M., & Humphrey, N. K. (2016). Dissociation of the Reach and the Grasp in the destriate (V1) monkey Helen: a new anatomy for the dual visuomotor channel theory of reaching, Experimental Brain Research, 234(8), 2351-2362, doi:10.1007/s00221-016-4640-6 (PubMed)

Whishaw, I. Q. & Karl, J. M. (2015). The contribution of the Reach and the Grasp to shaping brain and behaviour. Canadian Journal of Experimental Psychology, 68(4), 223-235. doi:10.1037/cep0000042 (PubMed)

Thomas, B. L., Karl, J. M., & Whishaw, I. Q. (2014). Independent development of the Reach and the Grasp in self-touching by human infants in the first six months. Frontiers in Developmental Psychology, 5(1526), doi:10.3389/fpsyg.2014.01526 (PubMed)

Karl, J. M., & Whishaw, I. Q. (2014). Haptic grasping configurations in early infancy reveal different developmental profiles for visual guidance of the Reach versus the Grasp. Experimental Brain Research, 232(10), 3301-3316. doi:10.1007/s00221-014-4013-y (PubMed)

Hall, L. A., Karl, J. M., Thomas, B. L., & Whishaw I. Q. (2014). Reach and Grasp reconfigurations reveal that proprioception assists reaching and hapsis assists grasping in peripheral vision. Experimental Brain Research, 232(9), 2807-2819. doi:10.1007/s00221-014-3945-6 (PubMed)

Karl, J. M., & Whishaw, I. Q. (2013). Different evolutionary origins for the Reach and the Grasp: an explanation for dual visuomotor channels in primate parietofrontal cortex. Frontiers in Neurology, 4(208), doi:10.3389/fneur.2013.00208. (PubMed)

Karl, J. M., Schneider, L. R., & Whishaw, I.Q. (2013). Nonvisual learning of intrinsic object properties in a reaching task dissociates grasp from reach. Experimental Brain Research, 225(4), 465-77. doi:10.1007/s00221-012-3386-z (PubMed)

Karl, J. M., Sacrey, L. R., Doan, J. B., & Whishaw, I. Q. (2012). Oral hapsis guides accurate hand preshaping for grasping food targets in the mouth. Experimental Brain Research, 221(2), 223-240. doi:10.1007/s00221-012-3164-y (PubMed)

Sacrey, L. R., Karl, J. M., & Whishaw, I. Q. (2012). Development of visual and somatosensory attention of the reach-to-eat movement in human infants aged 6 to 12 months. Experimental Brain Research, 223(1), 121-36. doi:10.1007/s00221-012-3246-x (PubMed)

Karl, J. M., Sacrey, L. R., Doan, J. B., & Whishaw, I. Q. (2012). Hand shaping using hapsis resembles visually guided hand shaping. Experimental Brain Research, 219(1), 59-74. doi:10.1007/s00221-012-3067-y (PubMed)

Sacrey, L. R., Karl, J. M., & Whishaw, I. Q. (2012). Development of rotational movements, hand shaping, and accuracy in advance and withdrawal for the reach-to-eat movement in human infants aged 6 to 12 months. Infant Behavior and Development, 35(3), 543-560. doi:10.1016/j.infbeh.2012.05.006 (PubMed)

Karl, J. M., Alaverdashvili, M., Cross, A. R., & Whishaw, I. Q. (2010). Thinning, movement, and volume loss of residual cortical tissue occurs after stroke in the adult rat as identified by histological and magnetic resonance imaging analysis. Neuroscience, 170(1), 123-137. doi:10.1016/j.neuroscience.2010.06.054 (PubMed)

Whishaw, I. Q., Sacrey, L. R., Travis, S. G., Gholamrezaei, G., Karl, J. M. (2010). The functional origins of speech-related hand gestures. Behavioural Brain Research, 214(2), 206-215. doi:10.1016/j.bbr.2010.05.026 (PubMed)

Karl, J. M., Sacrey, L. R., McDonald, R. J., & Whishaw I. Q. (2008). Intact intracortical microstimulation (ICMS) representations of rostral and caudal forelimb areas in rats with quinolinic acid lesions of the medial or lateral caudate-putamen in an animal model of Huntington’s disease. Brain Research Bulletin, 77(1), 42-48. doi:10.1016/j.brainresbull.2008.04.012 (PubMed)

Gharbawie, O. A., Karl, J. M., Whishaw, I. Q. (2007). Recovery of skilled reaching following motor cortex stroke: Do residual corticofugal fibers mediate compensatory recovery? European Journal of Neuroscience, 26(11), 3309-27. doi:10.1111/j.1460-9568.2007.05874.x (PubMed)

Book Chapters & Encyclopedia Entries

Whishaw, I. Q. & Karl, J. M. (2019). The Evolution of the Hand as a Tool in Feeding Behavior: The Multiple Motor Channel Theory of Hand Use. In V. Bels & I.Q. Whishaw (Eds.), Feeding in Vertebrates: Anatomy, Biomechanics, Evolution (pp. 159 – 186). Switzerland: Springer Nature. doi:10.1007/978-3-030-13739-7_6 (Springer Nature)

Karl, J. M., Sacrey, L. A., Whishaw, I. Q. (2018). Multiple Motor Channel Theory and the Development of Skilled Hand Movements in Human Infants. In D. Corbetta & M. Santello (Eds.), Reach-to-Grasp Behavior: Brain, Behavior and Modelling across the Life Span, (pp. 42-68). Abingdon, UK: Routledge Taylor & Francis. doi:10.4324/9780429467875-3 (Taylor & Francis)

Karl, J. M. (2017). Prehension. In B. Hopkins, E. Geangu, & S. Linenauger (Eds.) The Cambridge Encyclopedia of Child Development, 2nd Edition (pp. 542 – 548). Cambridge, UK: Cambridge University Press. doi:10.1017/9781316216491.087 (Cambridge University Press)

Karl, J. M. & Culham, J. C. (2016). Beyond Roland: How does the Human Brain Produce Complex Motor Behaviours? Insights from Functional Neuroimaging. In B. Kolb & I. Q. Whishaw (Eds.) Brain & Behaviour: Revisiting the Classic Studies (pp. 253-265). London, UK: Sage. doi:10.4135/9781529715064 (Sage)

Karl, J. M. & Whishaw, I. Q. (2012). Rodent skilled reaching for modeling pathological conditions of the human motor system. In E. L. Lane & S. B. Dunnett (Eds.), Contemporary Animal Models of Movement Disorders: Volume I, Neuromethods, vol. 61, (pp. 87 – 107). New York, NY: Springer. doi:10.1007/978-1-61779-298-4_6 (Springer)