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Table 1 Overview of experimental conditions and thresholds obtained in the different experiments

From: Sensitivity of a harbor seal (Phoca vitulina) to coherent visual motion in random dot displays

Exp

Dot size (deg)

Dot density (dots/deg2)

Number of dots

Dot lifetime (ms)

Type of noise

Display areas

(%) coherence at threshold

Coherent motion detection experiment

 

0.4

0.15

100

1000

RD

2

33.7

phase 1

0.4

0.15

100

125

RD

2

28.3

 

0.4

0.15

100

250

RD

2

21.3

 

0.4

0.15

100

500

RD

2

15.0

phase 2

0.2

0.38

250

1000

RD

2

9.2

 

0.2

0.77

500

1000

RD

2

4.7

 

0.2

1.54

1000

1000

RD

2

4.7

Coherent motion direction discrimination experiment using random direction noise

 

0.2

0.08

500

1000

RD

1

21.0

Coherent motion direction discrimination experiment using random position noise

 

0.2

0.08

500

a

RP

1

22.5

  1. Listed are the stimulus configurations used during experiments indicating dot size in deg, dot density in dots/deg2, number of dots, dot lifetime in ms, type of noise with RD referring to random direction noise and RP random position noise, and number of display areas together with the coherence thresholds in % coherence obtained for the experimental animal.
  2. alifetime of dots depends on % coherence (see Material and methods).