Behavioral and neural investigations of spatiotemporal form integration in healthy, sleep-restricted and brain-injured persons
In order to survive in a world full of potentially life-threatening danger, the movement of objects in the visual scene must be rapidly detected and identified. Characterizing how the visual system constructs our perception of an object's form and motion is essential to understating how the visual system works in general. An understanding of the intact, normally functioning visual system is a fundamental starting place for diagnosing and treating the visual system when it is impaired or damaged.
This project builds on of a growing body of evidence that our perception of a moving object is mediated by mutually interacting neural representations of the object's form and motion. It investigates one unifying neural mechanism that may underlie such form-motion interactions: spatiotemporal form integration (SFI). Spatiotemporal form integration is the integration of neural representations of form features (i.e. the corners of a square) over space and time.
The overall aim of the project is to investigate the properties and neural correlates of spatiotemporal form integration in mediating both form and motion perception and the possible application of this knowledge to the detection and identification of impaired neural processing in the visual system arising from sleep deprivation and mild traumatic brain injury.