-- DavidKeating - 20 Oct 2008

Module 41 - Photopic Frequency Series

To be completed by (Zrenner)

1. Scope

For light adapted conditions

2. Identification

2.1. Number

41

2.2. Version number

1.0

2.3. Date of approval

3. Protocol use(s)

Assessment Cone temporal function

4. Patient population

Cone disorders

5. Technical issues

4.1. Equipment and facilities

No specific definition, see ISCEV Standard (2008 update) and Protocols general aspects.

4.2. Staff expertise and responsibilities

No specific definition, see ISCEV Standard (2008 update) and Protocols general aspects.

4.3. Procedure

No specific definition, see ISCEV Standard (2008 update) and Protocols general aspects.

4.4. Patient Information

No specific definition, see ISCEV Standard (2008 update) and Protocols general aspects.

6. Response evaluation (with example)

Amplitude and phase, and frequency relationship

7. Reporting and storage

Curves + Fourier Analysis

8. Calibration

No specific definition, see ISCEV Standard (2008 update) and Protocols general aspects.

9. Protocol Specifications

Description

0.5 Log cd.s/m² [ 5Hz]

0.5 Log cd.s/m² [1 5Hz]

0.5 Log cd.s/m² [30 Hz]

0.5 Log cd.s/m² [4 5 Hz]

Averages per step

2

2

2

2

Adaptation time

0

0

0

0

Acquisition

Sample frequency

2000 (Hz)

2000 (Hz)

2000 (Hz)

2000 (Hz)

Sweep pre-trigger time

0 (ms)

0 (ms)

0 (ms)

0 (ms)

Sweep post-trigger time

400 (ms)

200 (ms)

200 (ms)

100 (ms)

Sweeps per result

30

30

30

30

Interstimulus interval

0 (ms)

0 (ms)

0 (ms)

0 (ms)

Drift removal

On

On

On

On

Manual rejection of sweeps

Off

Off

Off

Off

DC off-set removal

On: 20 (ms)

On: 20 (ms)

On: 20 (ms)

On: 20 (ms)

Stimulus

Pulse frequency

5 Hz

15 Hz

30 Hz

45 Hz

Pulse duration (d)

4 (ms)

4 (ms)

4 (ms)

4 (ms)

Stimulus luminance

3.0 ph cd.s/m²

3.0 ph cd.s/m²

3.0 ph cd.s/m²

3.0 ph cd.s/m²

Stimulus color

White 6500K

White 6500K

White 6500K

White 6500K

Background luminance

30 cd/m2

30 cd/m2

30 cd/m2

30 cd/m2

Background color

White 6500K

White 6500K

White 6500K

White 6500K

Channels (1 and 2)

Filter low frequency cutoff

0.3 (Hz)

0.3 (Hz)

0.3 (Hz)

0.3 (Hz)

Filter high frequencycutoff

300 (Hz)

300 (Hz)

300 (Hz)

300 (Hz)

Y-axis scaling

20 (uV)

20 (uV)

20 (uV)

20 (uV)

10. Relevant References

Topic revision: r2 - 06 Feb 2009 - 16:33:52 - TWikiAdminUser
 
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