Page History: Velocity Threshold Estimator Element
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Page Revision: 2016/03/24 16:19
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Velocity Threshold Estimator
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| Info |
| Category: |
Eye-tracking analysis |
|
AddIn: |
Eye-tracking analysis AddIn |
| Creator: |
OkazoLab Team |
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Scope: |
Parent Event |
| Owns Snippets: |
no |
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Usage: |
Background processing |
The Velocity Threshold Estimator element automatically estimates the saccade threshold over the current eye-tracking data and its noise. The estimated threshold can be then used by other eye-tracking analysis elements in an experiment.
Actions aligned with epochs of the parent event
| Epoch | Actions |
|---|
| After experiment onset | The element ... |
| Event rendered |
| Before event onset |
| After event onset |
| Control loop step | The element ... |
| Before event offset |
| Before experiment offset | The element ... |
Properties
Generic Properties
| Name | Property description | Constraints | Type | Upon change |
|---|
| Estimator Parameters |
| Is Estimating | Defines whether the threshold estimation is going on. Assign false to pause the estimation. | | Boolean |
| Lambda | Defines the multiplication factor for the standard deviation of the collected velocity distribution. The result of the multiplication is used as the velocity threshold. | Double |
| Gaze Processing |
| Radar Provider | Property description | Constraints | Type | Upon change |
| AOI | Property description | Constraints | Type | Upon change |
| Sampling Rate | Property description | Constraints | Type | Upon change |
| Analysis Window Size | Property description | Constraints | Type | Upon change |
| Exclusive Thresholds | Defines whether the threshold estimation is going on. Assign false to pause the estimation. | | Boolean |
| X Velocity Threshold | Property description | Constraints | Type | Upon change |
| Y Velocity Threshold | Property description | Constraints | Type | Upon change |
| General Plot Settings |
| Rendering Size | Property description | Constraints | Type | Upon change |
| Plot Title | Property description | Constraints | Type | Upon change |
| Show Axis | Property description | Constraints | Type | Upon change |
| Show Gridlines | Property description | Constraints | Type | Upon change |
| Add Screen Clone | Property description | Constraints | Type | Upon change |
| High-Quality Rendering | Property description | Constraints | Type | Upon change |
| Plot Theme | Property description | Constraints | Type | Upon change |
| Velocity Plot Settings |
| Threshold Color | Property description | Constraints | Type | Upon change |
| Velocity Line Color | Property description | Constraints | Type | Upon change |
| Line Thickness | Property description | Constraints | Type | Upon change |
| Saccade Label Color | Property description | Constraints | Type | Upon change |
| Results |
| Reset Plot Now | Property description | Constraints | Type | Upon change |
| XAML Velocity Plot | Property description | Constraints | Type | Upon change |
| Save Velocity Plot Now | Property description | Constraints | Type | Upon change |
| Review Velocity Plot | Property description | Constraints | Type | Upon change |
| Control |
| Is Enabled | Property description | Constraints | Type | Upon change |
| Title | Property description | Constraints | Type | Upon change |
+=== Properties inherited from clElement ===
Inherited properties of clElement
| Name | Description | Constraints | Value Type | Upon Change |
|---|
| Control |
| Is Enabled | If set to false the element is completely omitted when the experiment is run. | | Boolean |
|
| Title | Title of the element. | | String |
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One-sentence description
Description
The Velocity Threshold Estimator element automatically estimates the saccade threshold over the current eye-tracking data and its noise. The estimated threshold can be then used by other eye-tracking analysis elements in an experiment.
Snapshots
 Snapshot 1
| Snapshot 2 |
Practical Use
Technique 1
- Step 1
- Step 2
Technique 2
- Step 1
- Step 2
// Check the trial outcome. Result and RT just other user variables
// insert code snippet here..
Notes
- Insert Notes here..
- Insert Notes here..