caa a22 4500 467943567 CHVBK 20180405193734.0 cr unu---uuuuu 170328e20050301xx s 000 0 eng 10.1007/PL00022047 doi (NATIONALLICENCE)springer-10.1007/PL00022047 (NATIONALLICENCE)springer-10.1007/s11055-005-0069-2 Detection of narrow bars when presented in the right and left visual hemifields [Elektronische Daten] [M. Danilova, V. Bondarko] Three series of psychophysical experiments were performed to study the effects of additional images on the contrast thresholds for detection of narrow bars of width 1 arc min and length 1 arc degree presented randomly to the left and right sides of the fixation point with an eccentricity of 4°. The additional images were bars of the same size but with lower contrast, presented to the right and left of the test bar at varying distances, i.e., 1-2°. Different series used different contrast ratios for the test and additional bars. The first series revealed significant predominance of one visual hemifield over the other in performing the bar detection task, though the predominant side varied in different subjects. This predominance disappeared or changed to the opposite side in the second or third series. There was a tendency for the additional images to have asymmetrical influences on the detection threshold for the test bar: additional bars had more extensive inhibitory influences when they were on the peripheral side of the test bar. These data provide evidence for the absence of specificity in hemisphere operation in the detection task. The mechanism of description of peripheral images is discussed. Springer Science+Business Media, Inc., 2005 visual hemifield nationallicence detection nationallicence training nationallicence spatial elements nationallicence Danilova M. I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarov Bank, 199034, St. Petersburg, Russia aut Bondarko V. I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarov Bank, 199034, St. Petersburg, Russia aut Neuroscience and Behavioral Physiology Kluwer Academic Publishers-Consultants Bureau 35/3(2005-03-01), 325-331 0097-0549 35:3<325 2005 35 11055 https://doi.org/10.1007/PL00022047 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00022047 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Danilova M. I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarov Bank, 199034, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Bondarko V. I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarov Bank, 199034, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Neuroscience and Behavioral Physiology Kluwer Academic Publishers-Consultants Bureau 35/3(2005-03-01), 325-331 0097-0549 35:3<325 2005 35 11055 NATIONALLICENCE 856 40 https://doi.org/10.1007/s11055-005-0069-2 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer