Contact
schliessen

Filtern

 

Bibliotheken

Logo der Bibliothek

Siegel TU Braunschweig Universitätsbibliothek Braunschweig
You do not seem to be within the network of Braunschweig University.
As student, researcher or staff member of Braunschweig University you can use the VPN service to gain access to electronic publications.
Alternatively, you can use your university username and password via Shibboleth to gain access to electronic publications with certain publishers. You can find more details in our Blog (in German).

Directionally selective response of cells in the middle temporal area (MT) of the macaque monkey to the movement of equiluminous opponent color stimuli

Based on the fact that a great majority of cells in the middle temporal (MT) area of the macaque respond to movement of luminance contours with directional selectivity, this area has been thought to be concerned with the analysis of visual motion. However, objects can be discriminated from the backg... Full description

Main Author: Saito, H.
Contributors: Tanaka, K. | Author
Isono, H. | Author
Yasuda, M. | Author
Mikami, A. | Author
Contained in: Experimental Brain Research Berlin : Springer Vol. 75, No. 1 (1989), p. 1-14
Journal Title: Experimental Brain Research
Fulltext access:
Availability is being checked...
Interlibrary loan: Check possibility for interlibrary loan
Links: Volltext (dx.doi.org)
ISSN: 1432-1106
Additional Keywords: Color contour
Directional selectivity
Middle temporal (MT) area
Monkey
OriginalPaper
Visual motion analysis
DOI: 10.1007/BF00248524
Language: English
Physical Description: Online-Ressource
ID (e.g. DOI, URN): 10.1007/BF00248524
BF00248524
PPN (Catalogue-ID): SPR010415041
more publication details ...

Associated Publications/Volumes

  • Associated records are being queried...
more (+)
Internes Format
LEADER 03306nma a2200373 c 4500
001 SPR010415041
003 DE-601
005 20150324064152.0
007 cr uuu---uuuuu
008 150313s1989 000 0 eng d
024 7 |a 10.1007/BF00248524  |2 doi 
024 8 |a BF00248524 
035 |a BF00248524 
040 |b ger  |c GBVCP 
041 0 |a eng 
100 1 |a Saito, H. 
245 1 0 |a Directionally selective response of cells in the middle temporal area (MT) of the macaque monkey to the movement of equiluminous opponent color stimuli  |h Elektronische Ressource 
300 |a Online-Ressource 
520 |a Based on the fact that a great majority of cells in the middle temporal (MT) area of the macaque respond to movement of luminance contours with directional selectivity, this area has been thought to be concerned with the analysis of visual motion. However, objects can be discriminated from the background not only by differences in luminance but also by differences in color. It is possible that color signals are also used for motion analysis in MT. In the present study, we examined whether MT cells respond to movement of a pattern composed of pure color-contours. Using a color TV system, a moving color bar was displayed on a uniform background whose color was opponent with that of the bar. The main bar/background color combination we examined was magenta/cyan. Yellow/blue and cyan/ magenta combinations were also examined for some cells. The response of MT cells to movements of opponent-color stimuli was recorded while the bar/ background luminance ratio was changed from 1/10 to 10/1. In half of 89 cells tested in 3 monkeys, the response decreased considerably (disappeared completely in some cells) at a luminance ratio close to the human equiluminous condition. In the other half, a directional response persisted at any bar/background luminance ratio, though the response decreased to a varied extent (30–90% of the maximum response) near the ratio 1 (human equiluminous condition). The average magnitude of the equiluminous response to the magenta/cyan stimulus for the overall population was about 35% of the maximal response when the length of the bar (0.5° in width) and the movement amplitude were set to be optimal for individual cells, i.e. smaller than 15° and 10° of visual angle, respectively. This fall to 23% when the bar length and movement amplitude were limited to 2°. The same cell responded to pure color-contours of yellow/ blue as well as of cyan/magenta combinations. Thus, MT can detect the direction of movement of pure color-contours, although the sensitivity is less than for luminance contours. 
653 |a OriginalPaper 
653 |a Middle temporal (MT) area 
653 |a Visual motion analysis 
653 |a Directional selectivity 
653 |a Color contour 
653 |a Monkey 
700 1 |a Tanaka, K.  |e verfasserin  |4 aut 
700 1 |a Isono, H.  |e verfasserin  |4 aut 
700 1 |a Yasuda, M.  |e verfasserin  |4 aut 
700 1 |a Mikami, A.  |e verfasserin  |4 aut 
773 0 8 |i in  |t Experimental Brain Research  |d Berlin : Springer  |g Vol. 75, No. 1 (1989), p. 1-14  |q 75:1<1-14  |w (DE-601)SPR010376739  |x 1432-1106 
856 4 1 |u http://dx.doi.org/10.1007/BF00248524  |3 Volltext 
912 |a GBV_SPRINGER 
951 |a AR 
952 |d 75  |j 1989  |e 1  |c 03  |h 1-14