scholarly journals Face space has a center-surround organization: Evidence from a novel contrast-based face-adaptation technique

2010 ◽  
Vol 8 (6) ◽  
pp. 1144-1144
Author(s):  
S. Rostamirad ◽  
I. Oruc ◽  
J. J. S. Barton
Keyword(s):  
2020 ◽  
Vol 11 ◽  
Author(s):  
Ronja Mueller ◽  
Sandra Utz ◽  
Claus-Christian Carbon ◽  
Tilo Strobach
Keyword(s):  

2020 ◽  
Author(s):  
Fabian Soto ◽  
Karla Escobar ◽  
Jefferson Salan

Previous research suggests that learning to categorize faces along a novel dimension changes the perceptual representation of such dimension, increasing its discriminability, its invariance, and the information used to identify faces varying along the dimension. A common interpretation of these results is that categorization training promotes the creation of novel dimensions, rather than simply the enhancement of already-existing representations. Here, we trained a group of participants to categorize faces that varied along two morphing dimensions, one of them relevant to the categorization task and the other irrelevant to the task. An untrained group did not receive such categorization training. In three experiments, we used face adaptation aftereffects to explore how categorization training changes the encoding of face identities at the extremes of the category-relevant dimension, and whether such training produces encoding of the category-relevant dimension as a preferred direction in face space. The pattern of results suggests that categorization training enhances the already-existing norm-based coding of face identity, rather than creating novel category-relevant representations. We formalized this conclusion in a model that explains the most important results in our experiments and serves as a working hypothesis for future work in this area.


2007 ◽  
Vol 15 (5) ◽  
pp. 578-598 ◽  
Author(s):  
Kate Humphreys ◽  
Mark H. Johnson
Keyword(s):  

2010 ◽  
Vol 27 (8) ◽  
pp. 636-664 ◽  
Author(s):  
Tirta Susilo ◽  
Elinor McKone ◽  
Hugh Dennett ◽  
Hayley Darke ◽  
Romina Palermo ◽  
...  

1998 ◽  
Vol 51 (2) ◽  
pp. 321-346 ◽  
Author(s):  
Michael B. Lewis ◽  
Robert A. Johnston
Keyword(s):  

Lateral caricatures are transformed faces like caricatures but the transformation is orthogonal (in the face-space, Valentine, 1991) to the direction of caricaturization. It has been reported that lateral caricatures are more difficult to recognize than anti-caricatures (Rhodes & Tremewan, 1994). To investigate this effect, oblique caricatures (transformed obliquely to caricaturing) were generated by morphing between a veridical face and a reference face. Two experiments used a forced-choice similarity task to find which images are perceived to have the least change from the veridical. An advantage for caricatures over anti-caricatures was found, but none was found between oblique and anti-caricatures. Performance of theoretical lateral caricatures was extrapolated from the oblique caricature data. These lateral caricatures would be perceived as more similar to the veridical faces than were the anti-caricatures.


Author(s):  
Ben Tonra

This chapter explores the roots of Irish foreign, security, and defence policy, placing them in the context of a deeply pragmatic approach to public policy. Those roots are defined in terms of nationalism, solidarity, and global justice, which are themselves deep markers within Irish political culture. Ireland’s pragmatic approach is then grounded in a meticulously crafted rhetoric surrounding key foreign policy priorities but an associated reluctance to devote substantial resources towards these foreign policy and defence goals. Together, this gives rise to an assessment that the interests of smaller and less powerful states such as Ireland are best defended within legitimate, strong, and effective multilateral institutions such as the UN—even as the state continues to face adaptation challenges arising from a deepening foreign, security, and defence policy engagement within the EU.


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