Abstract

Five major aims are proposed. Most are directed toward linking the receptive fields of the magno cells to the luminance mechanism. Based on the preliminary results, a model is proposed which assumes that the receptive field surround has a delay of approx 20 msec and that the surround receives antagonistic inputs from the L and M cones. The assumptions and predictions of the model will be tested.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Research Project (R01)
Project #
5R01EY011246-02
Application #
2378095
Study Section
Visual Sciences B Study Section (VISB)
Project Start
1996-03-01
Project End
2000-02-29
Budget Start
1997-03-01
Budget End
1998-02-28
Support Year
2
Fiscal Year
1997
Total Cost
Indirect Cost

  Institution

Name
Harvard University
Department
Psychology
Type
Schools of Arts and Sciences
DUNS #
071723621
City
Cambridge
State
MA
Country
United States
Zip Code
02138

  Publications

Stromeyer 3rd, C F; Gowdy, P D; Chaparro, A et al. (2000) Colour adaptation modifies the temporal properties of the long- and middle-wave cone signals in the human luminance mechanism. J Physiol 526 Pt 1:177-94
Stromeyer 3rd, C F; Thabet, R; Chaparro, A et al. (1999) Spatial masking does not reveal mechanisms selective to combined luminance and red-green color. Vision Res 39:2099-112
Gowdy, P D; Stromeyer 3rd, C F; Kronauer, R E (1999) Facilitation between the luminance and red-green detection mechanisms: enhancing contrast differences across edges. Vision Res 39:4098-112
Gowdy, P D; Stromeyer 3rd, C F; Kronauer, R E (1999) Detection of flickering edges: absence of a red-green edge detector. Vision Res 39:4186-91
Stromeyer 3rd, C F; Gowdy, P D; Chaparro, A et al. (1999) Second-site adaptation in the red-green detection pathway: only elicited by low-spatial-frequency test stimuli. Vision Res 39:3011-23
Zemany, L; Stromeyer 3rd, C F; Chaparro, A et al. (1998) Motion detection on flashed, stationary pedestal gratings: evidence for an opponent-motion mechanism. Vision Res 38:795-812
Stromeyer 3rd, C F; Chaparro, A; Rodriguez, C et al. (1998) Short-wave cone signal in the red-green detection mechanism. Vision Res 38:813-26
Stromeyer 3rd, C F; Chaparro, A; Tolias, A S et al. (1997) Colour adaptation modifies the long-wave versus middle-wave cone weights and temporal phases in human luminance (but not red-green) mechanism. J Physiol 499 ( Pt 1):227-54