caa a22 4500 445353775 CHVBK 20180317142853.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00221-011-2766-0 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2766-0 Colour-induced relationship between affect and reaching kinematics during a goal-directed aiming task [Elektronische Daten] [Camille Williams, Lawrence Grierson, Heather Carnahan] A link between affect and action has been supported by the discovery that threat information is prioritized through an action-centred pathway—the dorsal visual stream. Magnocellular afferents, which originate from the retina and project to dorsal stream structures, are suppressed by exposure to diffuse red light, which diminishes humans' perception of threat-based images. In order to explore the role of colour in the relationship between affect and action, participants donned different pairs of coloured glasses (red, yellow, green, blue and clear) and completed Positive and Negative Affect Scale questionnaires as well as a series of target-directed aiming movements. Analyses of affect scores revealed a significant main effect for affect valence and a significant interaction between colour and valence: perceived positive affect was significantly smaller for the red condition. Kinematic analyses of variable error in the primary movement direction and Pearson correlation analyses between the displacements travelled prior to and following peak velocity indicated reduced accuracy and application of online control processes while wearing red glasses. Variable error of aiming was also positively and significantly correlated with negative affect scores under the red condition. These results suggest that only red light modulates the affect-action link by suppressing magnocellular activity, which disrupts visual processing for movement control. Furthermore, previous research examining the effect of the colour red on psychomotor tasks and perceptual acceleration of threat-based imagery suggest that stimulus-driven motor performance tasks requiring online control may be particularly susceptible to this effect. Springer-Verlag, 2011 Motor nationallicence Performance nationallicence Affect nationallicence Vision nationallicence Red nationallicence Magnocellular nationallicence Williams Camille Graduate Department of Rehabilitation Science, University of Toronto, 160-500 University Avenue, M5G 1V7, Toronto, ON, Canada aut Grierson Lawrence Department of Family Medicine, Faculty of Health Sciences, McMaster University, McMaster Innovation Park, 175 Longwood Rd. S., Suite 201A, L8P 0A1, Hamilton, ON, Canada aut Carnahan Heather The Wilson Centre, Faculty of Medicine, University of Toronto, 200 Elizabeth Street, Eaton South 1E 583, M5G 2C5, Toronto, ON, Canada aut Experimental Brain Research Springer-Verlag 212/4(2011-08-01), 555-561 0014-4819 212:4<555 2011 212 221 https://doi.org/10.1007/s00221-011-2766-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2766-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Williams Camille Graduate Department of Rehabilitation Science, University of Toronto, 160-500 University Avenue, M5G 1V7, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Grierson Lawrence Department of Family Medicine, Faculty of Health Sciences, McMaster University, McMaster Innovation Park, 175 Longwood Rd. S., Suite 201A, L8P 0A1, Hamilton, ON, Canada aut NATIONALLICENCE 700 1- Carnahan Heather The Wilson Centre, Faculty of Medicine, University of Toronto, 200 Elizabeth Street, Eaton South 1E 583, M5G 2C5, Toronto, ON, Canada aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 212/4(2011-08-01), 555-561 0014-4819 212:4<555 2011 212 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer