Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Jacob Nachmias"'
Publikováno v:
Annual Review of Vision Science. 5:1-13
We are sad to report that Professor Jacob (Jack) Nachmias passed away on March 2, 2019. Nachmias was born in Athens, Greece, on June 9, 1928. To escape the Nazis, he and his family came to the United States in 1939. He received his undergraduate degr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f39aa40aa74ecdc7cca930cad1a41054
https://doi.org/10.1146/annurev-vision-011019-111539
https://doi.org/10.1146/annurev-vision-011019-111539
Autor:
Jacob Nachmias
Publikováno v:
Vision Research. 48:1290-1296
Discrimination was measured for height, area, and aspect ratio of ovals and rectangles. Random jittering of the orthogonal property (width, aspect ratio, and area) was used to control the observers’ criterion. Weber fractions for aspect ratio were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::574893cc3a1130ad97fab16d608c34b7
https://doi.org/10.1016/j.visres.2008.02.024
https://doi.org/10.1016/j.visres.2008.02.024
Autor:
Jacob Nachmias
Publikováno v:
Vision Research. 46(15):2456-2464
Psychometric functions were measured in various visual discrimination tasks involving test stimuli whose values spanned a standard stimulus. In two-interval trial blocks, the standard was either always in the first or always in the second interval, o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::774f276692c95d9c8f40611bff46d8aa
Autor:
Jacob Nachmias
Publikováno v:
Vision Research. 42:41-48
The main purpose of these experiments was to examine in detail how successfully the uncertainty reduction explanation accounts for the effects of spatial cues in a temporal forced-choice contrast discrimination task in which any one of four well-sepa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28e41566d6caa701fa8c87fd3fe36cbd
https://doi.org/10.1016/s0042-6989(01)00254-1
https://doi.org/10.1016/s0042-6989(01)00254-1
Autor:
Jacob Nachmias
Publikováno v:
Vision Research. 39(6):1133-1142
Thresholds were measured for detecting 4 cpd gratings added to maskers consisting of nine sinusoidal components spanning 1 octave around the signal frequency. Phases of all mask components were randomized on every presentation. To assess their import
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89035880a7138a51527a110e8c7d2bd4
Autor:
Jacob Nachmias
Publikováno v:
Vision research. 33(10)
According to the standard model of masked detection of gratings, the observers's task is to decide whether the response of some critical mechanism is reliably increased by the addition of the test stimulus to the masker. To test this conception, expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a373ce707d1bb5663005869cd1e8be30
https://pubmed.ncbi.nlm.nih.gov/8333158
https://pubmed.ncbi.nlm.nih.gov/8333158
Autor:
Jacob Nachmias, Bernice E. Rogowitz
Publikováno v:
Vision Research. 23:1621-1629
Contrast- or quasi-frequency-modulated masker gratings consisting of three high frequency components (8.8, 11 and 13.2 c/deg) affect the detectability of a 2.2 c/deg signal grating, to an extent that is strongly dependent upon the relative phase betw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d147bd0c5bf9bd13fc64abf1b824d5e1
https://doi.org/10.1016/0042-6989(83)90176-1
https://doi.org/10.1016/0042-6989(83)90176-1
Autor:
Jacob Nachmias
Publikováno v:
Vision Research. 21:215-223
The frequent current use in probability summation calculations of equations of the form. P = 1 − (1−γ)exp[−(I/α)β] to represent the psychometric function for contrast detection is based on two assumptions: (1) γ can be changed without affec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d743fa31df898f7d406bbb1de76f022
https://doi.org/10.1016/0042-6989(81)90115-2
https://doi.org/10.1016/0042-6989(81)90115-2
Publikováno v:
Vision Research. 14:803-812
Models explaining the Stiles-Crawford Effect typically characterize individual receptors as either narrowly or broadly “tuned” (i.e. reactive to light incident through a narrow or broad angle, respectively). Makous (1968) has shown that he retina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::577afca87b377ccb42509934be7f4cca
https://doi.org/10.1016/0042-6989(74)90144-8
https://doi.org/10.1016/0042-6989(74)90144-8
Autor:
Andrew B. Watson, Jacob Nachmias
Publikováno v:
Vision Research. 20:91-94
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72190eb482c284269018aadca8f95362
https://doi.org/10.1016/0042-6989(80)90147-9
https://doi.org/10.1016/0042-6989(80)90147-9