The persistence of object file representations. Noles, N. S, Scholl, B. J, & Mitroff, S. R Percept Psychophys, 67(2):324-34, 2005.
abstract   bibtex   
Coherent visual experience of dynamic scenes requires not only that the visual system segment scenes into component objects but that these object representations persist, so that an object can be identified as the same object from an earlier time. Object files (OFs) are visual representations thought to mediate such abilities: OFs lie between lower level sensory processing and higher level recognition, and they track salient objects over time and motion. OFs have traditionally been studied via object-specific preview benefits (OSPBs), in which discriminations of an object's features are speeded when an earlier preview of those features occurred on the same object, as opposed to on a different object, beyond general displaywide priming. Despite its popularity, many fundamental aspects of the OF framework remain unexplored. For example, although OFs are thought to be involved primarily in online visual processing, we do not know how long such representations persist; previous studies found OSPBs for up to 1500 msec but did not test for longer durations. We explored this issue using a modified object reviewing paradigm and found that robust OSPBs persist for more than five times longer than has previously been tested-for at least 8 sec, and possibly for much longer. Object files may be the "glue" that makes visual experience coherent not just in online moment-by-moment processing, but on the scale of seconds that characterizes our everyday perceptual experiences. These findings also bear on research in infant cognition, where OFs are thought to explain infants' abilities to track and enumerate small sets of objects over longer durations.
@Article{Noles2005,
  author   = {Nicholaus S Noles and Brian J Scholl and Stephen R Mitroff},
  journal  = {Percept Psychophys},
  title    = {The persistence of object file representations.},
  year     = {2005},
  number   = {2},
  pages    = {324-34},
  volume   = {67},
  abstract = {Coherent visual experience of dynamic scenes requires not only that
	the visual system segment scenes into component objects but that
	these object representations persist, so that an object can be identified
	as the same object from an earlier time. Object files (OFs) are visual
	representations thought to mediate such abilities: OFs lie between
	lower level sensory processing and higher level recognition, and
	they track salient objects over time and motion. OFs have traditionally
	been studied via object-specific preview benefits (OSPBs), in which
	discriminations of an object's features are speeded when an earlier
	preview of those features occurred on the same object, as opposed
	to on a different object, beyond general displaywide priming. Despite
	its popularity, many fundamental aspects of the OF framework remain
	unexplored. For example, although OFs are thought to be involved
	primarily in online visual processing, we do not know how long such
	representations persist; previous studies found OSPBs for up to 1500
	msec but did not test for longer durations. We explored this issue
	using a modified object reviewing paradigm and found that robust
	OSPBs persist for more than five times longer than has previously
	been tested-for at least 8 sec, and possibly for much longer. Object
	files may be the "glue" that makes visual experience coherent not
	just in online moment-by-moment processing, but on the scale of seconds
	that characterizes our everyday perceptual experiences. These findings
	also bear on research in infant cognition, where OFs are thought
	to explain infants' abilities to track and enumerate small sets of
	objects over longer durations.},
  keywords = {Extramural, Humans, Motion Perception, N.I.H., Non-P.H.S., P.H.S., Research Support, Rotation, U.S. Gov't, Visual Perception, 15973783},
}

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