scholarly journals The processing of hierarchical stimuli: Effects of retinal locus, locational uncertainty, and stimulus identity

1988 ◽  
Vol 44 (2) ◽  
pp. 172-181 ◽  
Author(s):  
Marvin R. Lamb ◽  
Lynn C. Robertson
Keyword(s):  
Retinal Locus ◽  
Hierarchical Stimuli ◽  
Stimulus Identity ◽  
Locational Uncertainty

Do You Want to See the Tree? Ignore the Forest

2014 ◽  
Vol 61 (3) ◽  
pp. 205-214 ◽  
Author(s):  
Nicolas Poirel ◽  
Claire Sara Krakowski ◽  
Sabrina Sayah ◽  
Arlette Pineau ◽  
Olivier Houdé ◽  
...  
Keyword(s):  
Visual Recognition ◽  
Local Level ◽  
Local Information ◽  
Visual Environment ◽  
Global Information ◽  
Focus Attention ◽  
Global Level ◽  
Hierarchical Stimuli ◽  
Priming Paradigm ◽  
The One

The visual environment consists of global structures (e.g., a forest) made up of local parts (e.g., trees). When compound stimuli are presented (e.g., large global letters composed of arrangements of small local letters), the global unattended information slows responses to local targets. Using a negative priming paradigm, we investigated whether inhibition is required to process hierarchical stimuli when information at the local level is in conflict with the one at the global level. The results show that when local and global information is in conflict, global information must be inhibited to process local information, but that the reverse is not true. This finding has potential direct implications for brain models of visual recognition, by suggesting that when local information is conflicting with global information, inhibitory control reduces feedback activity from global information (e.g., inhibits the forest) which allows the visual system to process local information (e.g., to focus attention on a particular tree).

Preferred Retinal Locus Development in Patients with Macular Disease

Ophthalmology ◽  
2005 ◽  
Vol 112 (9) ◽  
pp. 1579-1585 ◽  
Author(s):  
Michael D. Crossland ◽  
Louise E. Culham ◽  
Stamatina A. Kabanarou ◽  
Gary S. Rubin
Keyword(s):  
Retinal Locus ◽  
Macular Disease

Age‐related changes in memory for visual hierarchical stimuli

1993 ◽  
Vol 9 (3-4) ◽  
pp. 259-269 ◽  
Author(s):  
Natacha A. Akshoomoff ◽  
Dean C. Delis ◽  
Frank Haist
Keyword(s):  
Age Related ◽  
Hierarchical Stimuli ◽  
Age Related Changes

scholarly journals Broad scope of attention results in better temporal resolution: Evidence from a temporal order judgment study

2021 ◽  
Author(s):  
Ramya Mudumba ◽  
Narayanan Srinivasan
Keyword(s):  
Temporal Order ◽  
Temporal Order Judgment ◽  
Temporal Frequency ◽  
Judgment Task ◽  
Spatiotemporal Resolution ◽  
Trade Off ◽  
Spatiotemporal Processing ◽  
Broad Scope ◽  
Trade Offs ◽  
Hierarchical Stimuli

The nature of spatiotemporal interactions in visual perception due to modulations of attention is still not well understood. Transient shifts of attention have been shown to induce a trade-off in spatiotemporal acuities at the cued location. Attention also can be varied in terms of scope and the evidence for the effects of scope on the spatiotemporal resolution for coupling or trade-offs have been equivocal. We predicted that scaling or changing the scope of attention would rather result in a spatiotemporal trade-off based on the complementary spatial and temporal frequency properties of the magnocellular and parvocellular channels. We manipulated the scope of attention by asking participants to perform a global or local target detection task with hierarchical stimuli. In addition, participants performed a temporal order judgment task with two discs presented alongside the hierarchical stimuli. We found higher temporal sensitivity with broad scope of attention or global processing compared to narrow scope of attention or local processing. The results provide evidence for a spatiotemporal processing trade-off when attention is scaled spatially. This result throws doubt on a general coupling or resource metaphor explanation irrespective of the spatial or temporal nature of the tasks. The results indicate the further need for carefully investigating the spatial and temporal properties of attention and its effect on spatiotemporal processing at different scales.

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