PMID- 27494545
OWN - NLM
STAT- MEDLINE
DCOM- 20170621
LR  - 20181202
IS  - 1534-7362 (Electronic)
IS  - 1534-7362 (Linking)
VI  - 16
IP  - 10
DP  - 2016 Aug 1
TI  - Nonretinotopic perception of orientation: Temporal integration of basic features 
      operates in object-based coordinates.
PG  - 3
LID - 10.1167/16.10.3 [doi]
AB  - Early, feed-forward visual processing is organized in a retinotopic reference 
      frame. In contrast, visual feature integration on longer time scales can involve 
      object-based or spatiotopic coordinates. For example, in the Ternus-Pikler (T-P) 
      apparent motion display, object identity is mapped across the object motion path. 
      Here, we report evidence from three experiments supporting nonretinotopic feature 
      integration even for the most paradigmatic example of retinotopically-defined 
      features: orientation. We presented observers with a repeated series of T-P 
      displays in which the perceived rotation of Gabor gratings indicates processing 
      in either retinotopic or object-based coordinates. In Experiment 1, the frequency 
      of perceived retinotopic rotations decreased exponentially for longer 
      interstimulus intervals (ISIs) between T-P display frames, with object-based 
      percepts dominating after about 150-250 ms. In a second experiment, we show that 
      motion and rotation judgments depend on the perception of a moving object during 
      the T-P display ISIs rather than only on temporal factors. In Experiment 3, we 
      cued the observers' attentional state either toward a retinotopic or object 
      motion-based reference frame and then tracked both the observers' eye position 
      and the time course of the perceptual bias while viewing identical T-P display 
      sequences. Overall, we report novel evidence for spatiotemporal integration of 
      even basic visual features such as orientation in nonretinotopic coordinates, in 
      order to support perceptual constancy across self- and object motion.
FAU - Wutz, Andreas
AU  - Wutz A
FAU - Drewes, Jan
AU  - Drewes J
FAU - Melcher, David
AU  - Melcher D
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Vis
JT  - Journal of vision
JID - 101147197
SB  - IM
MH  - Attention/*physiology
MH  - Female
MH  - Humans
MH  - Male
MH  - Motion
MH  - Motion Perception/*physiology
MH  - Orientation/*physiology
MH  - Retina/physiology
MH  - Space Perception/*physiology
MH  - Visual Cortex/*physiology
MH  - Visual Fields/physiology
MH  - Young Adult
EDAT- 2016/08/06 06:00
MHDA- 2017/06/22 06:00
CRDT- 2016/08/06 06:00
PHST- 2016/08/06 06:00 [entrez]
PHST- 2016/08/06 06:00 [pubmed]
PHST- 2017/06/22 06:00 [medline]
AID - 2542970 [pii]
AID - 10.1167/16.10.3 [doi]
PST - ppublish
SO  - J Vis. 2016 Aug 1;16(10):3. doi: 10.1167/16.10.3.