The peripheral critical flicker frequency

Hartmann, E. Eugenie; Lachenmayr, Bernhard; Brettel, Hans

doi:10.1016/0042-6989(79)90227-x

Cited by 121 publications

(74 citation statements)

References 15 publications

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“…However, the following facts, though not speaking directly to the issue, concur in suggesting that under some conditions a foveal excitation takes longer to decay than a parafoveal one. First, there is some data (e.g., Hartmann, Lachenmayr, & Brettel, 1979) that suggests that, under certain conditions of lighting, flicker fusion frequency is higher in parafoveal regions. Incidental evidence to support this can be obtained by looking at a small TV screen.…”

Section: Flash Localization During Saccadesmentioning

confidence: 99%

Retinal versus extraretinal influences in flash localization during saccadic eye movements in the presence of a visible background

Ο’Regan

1984

Perception & Psychophysics

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Four experiments examined the relative use of retinal and extraretinal information in judging the location of a stimulus flash presented under normal lighting conditions in the temporal vicinity of an eye saccade. Two previous studies done under normal lighting conditions (N. Bischof & E. Kramer, 1968, andS. Mateeff, 1978) had hypothesized strong use of extraretinal information. The present study reexamined this work and showed that, in fact, two kinds of retinal effects had been neglected in these studies, and that these alone probably suffice to explain the results. The first retinal effect is related to differences between the response of the visual system to foveal and peripheral stimuli, and may be active even in the dark. The second retinal effect is related to the fact that smearing of the retinal image of the background occurs when the eye moves.

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Section: Flash Localization During Saccadesmentioning

confidence: 99%

Retinal versus extraretinal influences in flash localization during saccadic eye movements in the presence of a visible background

Ο’Regan

1984

Perception & Psychophysics

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“…For example, when Bahrami (2003) reported that target color changes are detected more often than form changes, this could also be traced back to luminance and contrast sensitivity differences of the retina, such that foveal vision might be advantageous for detecting form changes due to its higher spatial resolution (Gralla, 2007). Besides this, the higher temporal resolution (Hartmann et al, 1979) and the superior motion detection capability of the peripheral visual system (Finlay, 1982;McKee & Nakayama, 1984) also predict high detection rates for motion changes in MOT. In this regard, it is really surprising that, to date, no attempt has been made to implement a motion-change detection task to examine the role of peripheral vision in MOT.…”

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confidence: 97%

“…Neuroanatomically, the capability to process visual information in the far periphery seems to be controlled by distinct, specialized cortical networks (for a recent review, see Yu, Chaplin, & Rosa, 2015). Furthermore, in comparison to foveal vision, peripheral vision features higher temporal resolution (Hartmann, Lachenmayr, & Brettel, 1979) and superior motion detection (Finlay, 1982;McKee & Nakayama, 1984). Thus, whereas foveal vision with its high spatial resolution is important for extracting detailed information, a crucial role for peripheral vision seems to refer to the processing of changing aspects in the visual environment (for a review, see Strasburger, Rentschler, & Jüttner, 2011).…”

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Detecting single-target changes in multiple object tracking: The case of peripheral vision

Vater

Kredel

Hossner

2016

Atten Percept Psychophys

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In the present study, we investigated whether peripheral vision can be used to monitor multiple moving objects and to detect single-target changes. For this purpose, in Experiment 1, a modified multiple object tracking (MOT) setup with a large projection screen and a constant-position centroid phase had to be checked first. Classical findings regarding the use of a virtual centroid to track multiple objects and the dependency of tracking accuracy on target speed could be successfully replicated. Thereafter, the main experimental variations regarding the manipulation of to-bedetected target changes could be introduced in Experiment 2. In addition to a button press used for the detection task, gaze behavior was assessed using an integrated eyetracking system. The analysis of saccadic reaction times in relation to the motor response showed that peripheral vision is naturally used to detect motion and form changes in MOT, because saccades to the target often occurred after target-change offset. Furthermore, for changes of comparable task difficulties, motion changes are detected better by peripheral vision than are form changes. These findings indicate that the capabilities of the visual system (e.g., visual acuity) affect change detection rates and that covert-attention processes may be affected by vision-related aspects such as spatial uncertainty. Moreover, we argue that a centroid-MOT strategy might reduce saccaderelated costs and that eyetracking seems to be generally valuable to test the predictions derived from theories of MOT.Finally, we propose implications for testing covert attention in applied settings.

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“…Más eredményeket kapunk, ha a LED-fényt a foveára vagy a retina perifériájára fókuszáljuk [1]. A továbbiak-ban a centrális, vagyis a foveára fókuszált CFF tárgyalásá-val foglalkozunk kizárólagosan.…”

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“…Az eredményt módosító faktor lehet például a megvilágító fény ereje [1], színe [4,5], kitöltési tényező-je [6] (a LED egy periódusra vonatkozó világítás időtar-tama). Továbbá módosul a CFF cataracta [7] vagy maculadegeneráció [4] jelenlétében, alkoholfogyasztás [8] és dohányzás [8] hatására, és nemtől függően [9] is.…”

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Az IMEA ADR III kritikus fúziós frekvenciavizsgáló eszközzel végzett mérések reprodukálhatóságának vizsgálata

et al. 2016

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Bevezetés: A centrális kritikus fúziós frekvencia (CFF) mérése a szemészetben gyakran alkalmazott vizsgálat, segítséget adhat több szemészeti, neurológiai, belgyógyászati betegség diagnosztizálásában, illetve meglévő betegségek progreszsziójának követésében. Célkitűzés: A szerzők az IMEA ADR III digitális CFF-mérő készüléket tesztelték 30 fiatal, egészséges, magyar személyen. Módszer: Általános szemészeti vizsgálatot követően, a műszer által kibocsátott négyféle fénnyel végeztek méréseket, minden színnel ötször egymás után, két különböző napon, három különböző időpont-ban, standardizált körülmények mellett. A statisztikai elemzés során az intrasession-, intersession-és intervisit-variabilitást, az egyes színek közötti különbségeket és egyes befolyásoló faktorok hatásait vizsgálták. Eredmények: Az egyes mérési sorozatok között sem középértékben, sem a szórásokban nem találtak különbséget. A vörös színnel végzett vizsgálat küszöbérték-eredményei statisztikailag alacsonyabbak voltak a többinél, illetve a kék szín küszöbértékei alacsonyabbak voltak a zöldnél. A nemre, életkorra, íriszszínre és dohányzásra vonatkozóan nem találtak különbségeket a küszöbértékekben. Következtetések: A műszer egészséges populáción, egymástól független időpontokban, megbízha-tóan, pontosan mér, az eredmények jól reprodukálhatóak. Orv. Hetil., 2016, 157(27), 1079-1086. Kulcsszavak: kritikus fúziós frekvencia, CFF, reprodukálhatóságReproducibility of measurements using the IMEA ADR III critical flicker-fusion frequency measuring device Introduction: Measurement of central critical flicker-fusion frequency is a common screening test for eye diseases and additionally it can serve as a useful diagnostic test in numerous neurological and internal diseases. The test might also be used for monitoring purposes. Aim: The aim of the authors was to evaluate a digital central critical flicker-fusion frequency measuring device (IMEA ADR III) in 30 young, healthy Hungarian subjects. Method: After a general ophthalmological screening examination, monocular central critical flicker-fusion frequency was measured with four colours. Measurements were carried out on two separate days in three sessions under standardized conditions. Intrasession, intersession and intervisit variabilities, differences in central critical flicker-fusion frequency using the four colours and the effect of certain other influencing factors were determined. Results: There were no statistically significant differences between sessions in the mean and standard deviation of the measurement sets. The central critical flicker-fusion frequency threshold for red colour was significantly lower than for other colours, and the threshold for blue colour was significantly lower than for green. There were no significant differences regarding sex, age, iris colour, and smoking indicating that these factors did not influence the central critical flicker-fusion frequency threshold in these subjects. Conclusions: Measurement results with the device are reliable and reproducible in healthy, young po...

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The peripheral critical flicker frequency

Cited by 121 publications

References 15 publications

Retinal versus extraretinal influences in flash localization during saccadic eye movements in the presence of a visible background

Retinal versus extraretinal influences in flash localization during saccadic eye movements in the presence of a visible background

Detecting single-target changes in multiple object tracking: The case of peripheral vision

Az IMEA ADR III kritikus fúziós frekvenciavizsgáló eszközzel végzett mérések reprodukálhatóságának vizsgálata

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