Eye Movement Strategies Involved in Face Perception

Perception ◽  
1977 ◽  
Vol 6 (3) ◽  
pp. 313-326 ◽  
Author(s):  
Gail J Walker-Smith ◽  
Alastair G Gale ◽  
John M Findlay
Keyword(s):  
Eye Movements ◽  
Alternative Interpretation ◽  
The Other ◽  
Facial Features ◽  
Corneal Reflection ◽  
Black And White ◽  
Eye Fixations ◽  
Movement Strategies ◽  
Test Face ◽  
Individual Fixation

Recordings were made of the eye fixations of three subjects in two tasks involving black-and-white photographs of faces. In the first task, subjects matched a test face with a previously viewed target face; in the second task, subjects compared two simultaneously presented faces. The eye movements were recorded with a corneal reflection technique. Each subject showed an individual fixation strategy for the tasks; in particular each subject had one or more preferred facial features which were viewed foveally in both tasks. The subjects also showed some tendency to use a regular sequential pattern of eye movements. However, the sequences used differed from one task to the other. Although some aspects of the results support the scanpath hypothesis of Noton, it is suggested that an alternative interpretation is possible.

scholarly journals Do People Exploit Risk–Reward Structures To Simplify Information Processing in Risky Choice?

2018 ◽  
Author(s):  
Christina Leuker ◽  
Thorsten Pachur ◽  
Ralph Hertwig ◽  
Timothy Joseph Pleskac
Keyword(s):  
Information Processing ◽  
Eye Movements ◽  
Cognitive Processing ◽  
Risky Choice ◽  
Choice Task ◽  
Decision Makers ◽  
The Other ◽  
Value Maximization ◽  
Environmental Property ◽  
Eye Fixations

The high rewards people desire are often unlikely. Here, we investigated whether decision makers exploit such ecological correlations between risks and rewards to simplify theirinformation processing. In a learning phase, participants were exposed to options in which risks and rewards were negatively correlated, positively correlated, or uncorrelated. In a subsequent risky choice task, where the emphasis was on making either a ’fast’ or the ’best’ possible choice, participants’ eye movements were tracked. The changes in the number, distribution, and direction of eye fixations in ’fast’ trials did not differ between the risk–reward conditions. In ’best’ trials, however, participants in the negatively correlated condition lowered their evidence threshold, responded faster, and deviated from expected value maximization more than in the other risk–reward conditions. The results underscore how conclusions about people’s cognitive processing in risky choice can depend on risk–reward structures, an often neglected environmental property.

Visual asymmetries during face encoding Increased dwell time and fixations in the upper and left hemifields

2018 ◽  
Author(s):  
Fatima Maria Felisberti
Keyword(s):  
Face Recognition ◽  
Eye Movements ◽  
Visual Field ◽  
Face Processing ◽  
Dwell Time ◽  
The Other ◽  
Environmental Cues ◽  
Reading Habits ◽  
The Right

Visual field asymmetries (VFA) in the encoding of groups rather than individual faces has been rarely investigated. Here, eye movements (dwell time (DT) and fixations (Fix)) were recorded during the encoding of three groups of four faces tagged with cheating, cooperative, or neutral behaviours. Faces in each of the three groups were placed in the upper left (UL), upper right (UR), lower left (LL), or lower right (LR) quadrants. Face recognition was equally high in the three groups. In contrast, the proportion of DT and Fix were higher for faces in the left than the right hemifield and in the upper rather than the lower hemifield. The overall time spent looking at the UL was higher than in the other quadrants. The findings are relevant to the understanding of VFA in face processing, especially groups of faces, and might be linked to environmental cues and/or reading habits.

Peripheral Facial Features Guiding Eye Movements and Reducing Fixational Variability

2021 ◽  
Author(s):  
Nicole X Han ◽  
Puneeth N. Chakravarthula ◽  
Miguel P. Eckstein
Keyword(s):  
Eye Movements ◽  
Spatial Configuration ◽  
Oculomotor System ◽  
Facial Features ◽  
Robust Solution ◽  
The Face ◽  
And Gender ◽  
Social Importance ◽  
Fixation Variability

Face processing is a fast and efficient process due to its evolutionary and social importance. A majority of people direct their first eye movement to a featureless point just below the eyes that maximizes accuracy in recognizing a person's identity and gender. Yet, the exact properties or features of the face that guide the first eye movements and reduce fixational variability are unknown. Here, we manipulated the presence of the facial features and the spatial configuration of features to investigate their effect on the location and variability of first and second fixations to peripherally presented faces. Results showed that observers can utilize the face outline, individual facial features, and feature spatial configuration to guide the first eye movements to their preferred point of fixation. The eyes have a preferential role in guiding the first eye movements and reducing fixation variability. Eliminating the eyes or altering their position had the greatest influence on the location and variability of fixations and resulted in the largest detriment to face identification performance. The other internal features (nose and mouth) also contribute to reducing fixation variability. A subsequent experiment measuring detection of single features showed that the eyes have the highest detectability (relative to other features) in the visual periphery providing a strong sensory signal to guide the oculomotor system. Together, the results suggest a flexible multiple-cue approach that might be a robust solution to cope with how the varying eccentricities in the real world influence the ability to resolve individual feature properties and the preferential role of the eyes.

The Evolution of the Colour Sense

1901 ◽  
Vol 47 (199) ◽  
pp. 678-679
Author(s):  
F. W. Edridge-Green
Keyword(s):  
Nerve Impulse ◽  
The Other ◽  
Physiological Basis ◽  
Black And White ◽  
Normal Distance ◽  
Colour Sense ◽  
Two Factors ◽  
Colour Blindness ◽  
The Mind

All the facts which can be gathered from the study of museums or literature point to the conclusion that the sense of light was developed first, then the sense of colour. The tendency has been to regard colour-blindness as “chromic myopia;” but this is not correct unless there is a defective perception of light as well, as shown by the cases which I have recorded. A man may be able to see light of all colours at twice the normal distance, and yet be colour-blind. I specially wish to emphasise the fact that there is no definite relation between light and colour. When light falls upon the eye it sets up a nerve impulse, which is conveyed to the brain. In the impulse itself we have the physiological basis of light, and in the quality of the impulse the physiological basis of colour. My contention is that these two factors are perceived by two entirely different sets of cerebral cells, those devoted to the perception of colour being developed at a later period than those conveying to the mind the sensation of light. All the evidence which can be obtained shows that all objects were first seen as in a photograph, that is, in different degrees of black and white. In the evolution of the colour sense those waves which differ most physically, namely, red and violet, were first recognised as different, the remainder of the spectrum appearing grey. Homer's colour vision was of this class, which represents the degree just preceding total colour-blindness. I have recorded a case of this kind of a man who was colour-blind with one eye, and who was therefore able to tell me exactly how objects appeared with this eye. He said that the spectrum appeared nearly all grey, but with a tinge of red at one end and a tinge of violet at the other; he could see very much better with the colour-blind eye than with the other.

scholarly journals Selection of visual information for lightness judgements by eye movements

2013 ◽  
Vol 368 (1628) ◽  
pp. 20130056 ◽  
Author(s):  
Matteo Toscani ◽  
Matteo Valsecchi ◽  
Karl R. Gegenfurtner
Keyword(s):  
Eye Movements ◽  
Visual System ◽  
Visual Information ◽  
Selection Process ◽  
Sampling Strategy ◽  
Selection Strategy ◽  
Eye Fixations ◽  
Target Layer ◽  
Highly Correlated ◽  
Selection Of

When judging the lightness of objects, the visual system has to take into account many factors such as shading, scene geometry, occlusions or transparency. The problem then is to estimate global lightness based on a number of local samples that differ in luminance. Here, we show that eye fixations play a prominent role in this selection process. We explored a special case of transparency for which the visual system separates surface reflectance from interfering conditions to generate a layered image representation. Eye movements were recorded while the observers matched the lightness of the layered stimulus. We found that observers did focus their fixations on the target layer, and this sampling strategy affected their lightness perception. The effect of image segmentation on perceived lightness was highly correlated with the fixation strategy and was strongly affected when we manipulated it using a gaze-contingent display. Finally, we disrupted the segmentation process showing that it causally drives the selection strategy. Selection through eye fixations can so serve as a simple heuristic to estimate the target reflectance.

Individual Recognition, Intragroup Cohesion and Intergroup Spacing: Evidence From Sound Playback To Forest Monkeys

Behaviour ◽  
1977 ◽  
Vol 60 (1-2) ◽  
pp. 28-74 ◽  
Author(s):  
Peter M. Waser
Keyword(s):  
Individual Recognition ◽  
The Other ◽  
Primate Species ◽  
Home Ranges ◽  
Loud Calls ◽  
Black And White ◽  
Other Hand ◽  
Individual Distinctiveness ◽  
Black And White Colobus ◽  
Intergroup Spacing

AbstractThe contexts and functions of several loud mangabey vocalizations, particularly the "whoopgobble", were investigated observationally and experimentally. Whoopgobbles are notable for their audibility and distinctiveness over long distances, their temporal pattern of delivery, and particularly their stereotypy and individual distinctiveness. On the other hand, contexts of and responses to these vocalizations are variable and sometimes nonobvious. In order to control context and more systematically investigate response, an experimental method involving playback of recorded vocalizations was developed. Although precautions against habituation were necessary, mangabey responses to playbacks were clearcut and repeatable. Answering vocalizations, changes in group movement, and changes in the dispersion of individuals within a group occurred only in response to mangabey vocalizations. Whoopgobble playbacks provoked a pattern of response, including most notably the rapid approach of one adult male (the "RA" male) from each group, which was specific to this call. Playback of whoopgobbles between 100 and 600m from mangabey groups indicated that this call does transmit information regarding the identity of the vocalizing individual and group over these distances. Test groups moved away from neighboring- and unknown-group calls, but towards those of their own males - particularly those of RA males. RA males, on the other hand, do not approach calls of other males from their own groups. Within a group, whoopgobbles may thus increase cohesion and influence the direction of movements. Characteristics of whoopgobble form and context are discussed with regard to hypothesized functions of these and other forest monkey loud calls. Responses by free-ranging mangabeys to playback of the whoopgobble confirm its role in maintaining distance between groups. Response was found to be independent of group size, despite the fact that whoopgobble rate is closely related to this variable and thus could transmit such information. Since responses were also found to be independent of location within the home range, intergroup spacing among mangabeys appears not be be "territorial", site defense does not occur. Nevertheless, the central areas in at least some mangabey groups' home ranges were never penetrated by neighbors. Playback tests with black-and-white colobus and blue monkeys, among which territorial spacing has been reported, indicate that responses to loud calls have some degree of site-specificity among these species. But the mangabey pattern of intergroup spacing appears to result from a combination of low group density, site attachment within groups, and site-independent avoidance between groups. These results emphasize that spacing "system" and "pattern" are not necessarily equivalent; a given set of spacing behaviors can result in different spacing patterns under different ecological conditions, while a given pattern may be obtained by any of several behavioral means. Evidence for site-independent spacing in other primate species is discussed.

scholarly journals Iringan Musik Dalam Pantomim

SELONDING ◽  
2019 ◽  
Vol 13 (13) ◽  
Author(s):  
Nur Iswantara
Keyword(s):  
Action Research ◽  
Qualitative Methods ◽  
Research Methods ◽  
Research Method ◽  
Facial Features ◽  
Theater Arts ◽  
Educational Approach ◽  
Structure Approach ◽  
Black And White ◽  
Multi Level

Pantomime is one of the oldest theater arts, where mime artists tell something just using their body, without talking. Pantomime artists are known for their white makeup and black pigtails, as well as other facial features to exaggerate their emotions. Black and white striped tops, white gloves and black hats are also complete with traditional Pantomime artist costumes. These clothes and makeup have become a tradition of many Pantomime artists. In adding the atmosphere of the movement displayed, a music illustration is given to bring the atmosphere to life.This study uses qualitative methods and action research methods which is a reflective research method. This type of research is able to offer new ways and procedures to improve and enhance the professionalism of pantomime presentation techniques. The approach used is structural and educative. The structure approach is used to solve something related to the arrangement or building of multi-level pantomime presentations, while the educational approach is used to solve those relating to pantomime education.Music illustrations in the Pantomime show can support the atmosphere of the show. The music played can be adjusted to the theme of the movement played by a Pantomime. Keywords: Pantomime, Illustration of Music, Atmosphere.

scholarly journals The Functionality of Color Terms in Antarah IBN SHADAD's Poetry

2018 ◽  
Vol 214 (1) ◽  
pp. 47-74
Author(s):  
M . Raad Abdul Jabbar Jawad
Keyword(s):  
Personal Experience ◽  
Arabic Language ◽  
The Other ◽  
Color Terms ◽  
Black And White ◽  
Poetic Image ◽  
Explicit Reference ◽  
Poetic Diction ◽  
Definition Of ◽  
Poetry Collection

     To start with, a definition of the term 'color' in Arabic language is presented.  Then, a study of colors implications in Al-Jahili poetry is proceeded; the poet's creativity in using color terms and incorporating these terms in Jahili poems explicitly or implicitly in forming up the topics of their poetry, then outlined. Color figures and images are dominant in Al-Jahili poetry to its extreme so as to propagate an oasis of environmental emulations, on one hand, and an outlet for personal experience on the other. In his poetry, Antara followed his ancestors' poetic traditions and closely textualized their inspirations and fantasies in his versification.  Partly, his poetic diction was personalized; whereas, the semantic contents tackled by ancestors were mediated and de toured astray in some instanses.  Reviewing his poetry collection one can infer his typical attitudes of using colors: the black, the white, the red, the green, the blue, and the yellow. Excessive use of these colors can be cited along with multiplicity of presentation in creating a quantum of color implications especially those of the white and the black, he used a decorated mosaic of colors in forming his poetic image; whereas he incorporated a corona of colors in restoring his poeticity.  Color contrasts are foregrounded in building up perceptible imagesof his poems. Colorful images, he used, asa loverand as a knight are merged with his passion and bravery; though gloomy in his macabre. The paper concludes that Antara used an excessive influx of colors terminology and semantic sheds in entailing his topics, focusing on the red, black and white.  The black was his favorite; whereas the red and the black are used excessively in his expressions.  Explicit reference to the red and black was the highest in number in the selected poems.  Essentially, some node that the notability of the black was a symptom of suffering and degrading he suffered as a black.

Sign in / Sign up

Export Citation Format

Share Document