Illusory line motion (ILM) refers to a motion illusion in which a flash at one end of a bar prior to the bar's instantaneous presentation or removal results in the percept of motion. While some theories attribute the origin of ILM to attention or early perceptual mechanisms, others have proposed that ILM results from impletion mechanisms that reinterpret the static bar as one in motion. The current functional magnetic resonance imaging study examined participants while they made decisions about the direction of motion in which a bar appeared to be removed. Preceding the instantaneous removal of the bar with a flash at one end resulted in a motion percept away from the flash. If this flash and the bar's removal overlapped in time, it appeared that the bar was removed towards the flash (reverse ILM). Independent of the motion type, brain responses indicated activations in areas associated with motion (MT+), endogenous and exogenous attention (intraparietal sulcus, frontal eye fields, and ventral frontal cortex), and response selection (ACC). ILM was associated with lower percept scores and higher activations in ACC relative to real motion, but no differences in shape-selective areas emerged. This pattern of brain activation is consistent with the attentional gradient model or bottom-up accounts of ILM in preference to impletion.


    Access

    Download


    Export, share and cite



    Title :

    Neural correlates of illusory line motion


    Contributors:

    Publication date :

    2014-01-27


    Remarks:

    Hamm , J P , Crawford , T J , Nebl , H , Kean , M , Williams , S C R & Ettinger , U 2014 , ' Neural correlates of illusory line motion ' PloS one , vol 9 , no. 1 , e87595 , pp. N/A . DOI:10.1371/journal.pone.0087595



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    629



    Vernier acuity of illusory contours defined by motion

    Barraza, Jose Fernando / Chen, Vincent J. | BASE

    Free access

    Primary visual cortex activity along the apparent-motion trace reflects illusory perception

    Muckli, Lars / Kohler, Axel / Kriegeskorte, Nikolaus et al. | BASE | 2006

    Free access

    Stochastic Completion Fields: A Neural Model of Illusory Contour Shape and Salience

    Williams, L. / Jacobs, D. / IEEE Computer Society et al. | British Library Conference Proceedings | 1995



    Age Discrimination - Real or Illusory for Capes?

    British Library Online Contents | 1995