Abstract
Classical data on the detection of simple patterns show that two eyes are more sensitive than one eye. The degree of binocular summation is important for inferences about the underlying combination mechanism. In a signal detection theory framework, sensitivity is limited by internal noise. If noise is added centrally after binocular combination, binocular sensitivity is expected to be twice as good as monocular. If the noise is added peripherally at each eye prior to combination, binocular sensitivity will be sqrt2 higher than monocular. In a large sample of observers (51), we measured contrast sensitivity for detection of gratings at several spatial frequencies using left, right, or both eyes.
| Original language | English |
|---|---|
| Pages (from-to) | 93-98 |
| Number of pages | 6 |
| Journal | Acta Psychologica |
| Volume | 131 |
| Issue number | 2 |
| Publication status | Published - 1 Jun 2009 |
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Keywords
- optics
- vision sciences
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Two eyes: square root 2 better than one? / Simpson, William A.; Manahilov, Velitchko; Shahani, Uma.
In: Acta Psychologica, Vol. 131, No. 2, 01.06.2009, p. 93-98.Research output: Contribution to journal › Article
TY - JOUR
T1 - Two eyes: square root 2 better than one?
AU - Simpson, William A.
AU - Manahilov, Velitchko
AU - Shahani, Uma
N1 - <p>Originally published in: Acta Psychologica (2009), 131 (2), pp.93-98.</p>
PY - 2009/6/1
Y1 - 2009/6/1
N2 - Classical data on the detection of simple patterns show that two eyes are more sensitive than one eye. The degree of binocular summation is important for inferences about the underlying combination mechanism. In a signal detection theory framework, sensitivity is limited by internal noise. If noise is added centrally after binocular combination, binocular sensitivity is expected to be twice as good as monocular. If the noise is added peripherally at each eye prior to combination, binocular sensitivity will be sqrt2 higher than monocular. In a large sample of observers (51), we measured contrast sensitivity for detection of gratings at several spatial frequencies using left, right, or both eyes.
AB - Classical data on the detection of simple patterns show that two eyes are more sensitive than one eye. The degree of binocular summation is important for inferences about the underlying combination mechanism. In a signal detection theory framework, sensitivity is limited by internal noise. If noise is added centrally after binocular combination, binocular sensitivity is expected to be twice as good as monocular. If the noise is added peripherally at each eye prior to combination, binocular sensitivity will be sqrt2 higher than monocular. In a large sample of observers (51), we measured contrast sensitivity for detection of gratings at several spatial frequencies using left, right, or both eyes.
KW - optics
KW - vision sciences
M3 - Article
VL - 131
SP - 93
EP - 98
JO - Acta Psychologica
JF - Acta Psychologica
SN - 0001-6918
IS - 2
ER -