Contributions:Human Association Task (HAT) - Revision history

Jchuang: /* Running the task and resources */

2026-10-08T22:18:02Z

Running the task and resources

← Older revision		Revision as of 22:18, 8 October 2026
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	Use the site launcher; load acquisition and task parameters, select SetConfig, then Start. The documented setup launches the Signal Source on the response-keyboard computer with <code>--LogKeyboard=1 --FileFormat=BCI2000</code>, supplying <code>KeyDown</code> / <code>KeyUp</code> and native recording. Do not also enable <code>KeyLogFilter</code>.		Use the site launcher; load acquisition and task parameters, select SetConfig, then Start. The documented setup launches the Signal Source on the response-keyboard computer with <code>--LogKeyboard=1 --FileFormat=BCI2000</code>, supplying <code>KeyDown</code> / <code>KeyUp</code> and native recording. Do not also enable <code>KeyLogFilter</code>.

	The supplied package places resources under tasks/HumanAssociationTask_BCI2000/resources: cifar contains BMP images, audio contains feedback WAVs, and guided contains videos/instructions. Match paths to the loaded parameters. ~~Categories~~ are 2 = car, 6 = dog and 58 = tree, with 500 images each.		The supplied package places resources under tasks/HumanAssociationTask_BCI2000/resources: The <code>cifar</code> folder contains BMP category images, <code>audio</code> contains feedback WAVs, and <code>guided</code> contains videos/instructions. Match resource paths to the loaded parameters. Task-specific category IDs are 2 = car, 6 = dog and 58 = tree, with 500 images each.

			For background on CIFAR, see the [https://www.cs.toronto.edu/~kriz/cifar.html CIFAR-10 and CIFAR-100 dataset page].

	== States ==		== States ==

Jchuang: /* See Also */

2026-10-08T22:14:03Z

Jchuang: /* Practice and Association Switching */

2026-10-08T22:03:35Z

Practice and Association Switching

← Older revision		Revision as of 22:03, 8 October 2026
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	Both switch exercises start with red-car / blue-dog.		Both switch exercises start with red-car / blue-dog.
	~~<div style="clear: both; height: 24px;"></div>~~

	{\| class="wikitable"		{\| class="wikitable"

Jchuang: /* Practice and Association Switching */

2026-10-08T22:03:24Z

Practice and Association Switching

← Older revision		Revision as of 22:03, 8 October 2026
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	Both switch exercises start with red-car / blue-dog.		Both switch exercises start with red-car / blue-dog.
			<div style="clear: both; height: 24px;"></div>

	{\| class="wikitable"		{\| class="wikitable"

Jchuang: /* Session Flow */

2026-10-08T22:02:56Z

Session Flow

← Older revision		Revision as of 22:02, 8 October 2026
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	<div style="clear: both; height: 24px;"></div>		<div style="clear: both; height: 24px;"></div>
	[[File:HAT_Session_Flow.png\|thumb\|center\|600px\|alt=Guided session in order: Video 1 then basic association practice; Video 2 then switch practice with an announcement and then without one; Video 3 then the main task with scheduled breaks, followed by completion.\|Figure 1. Guided session flow. Basic practice can be repeated. In the main task, association changes are not announced.]]		[[File:HAT_Session_Flow.png\|thumb\|center\|600px\|alt=Guided session in order: Video 1 then basic association practice; Video 2 then switch practice with an announcement and then without one; Video 3 then the main task with scheduled breaks, followed by completion.\|Figure 1. Guided session flow. Basic practice can be repeated. In the main task, association changes are not announced.]]
			<div style="clear: both; height: 24px;"></div>

	An on-screen association hint supports the start of unannounced practice and the main task, then fades. Participants continue using feedback to guide their choices.		An on-screen association hint supports the start of unannounced practice and the main task, then fades. Participants continue using feedback to guide their choices.

Jchuang: /* Visual Representation */

2026-10-08T22:02:46Z

Visual Representation

← Older revision		Revision as of 22:02, 8 October 2026
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	[[File:HAT_Reference_Stimulus_Details.png\|thumb\|center\|500px\|alt=Three equal central crops from the same trial: a red-majority dot cloud, three category choices, and an enlarged car image while the left response is held.\|Figure 3. Enlarged views from one trial, using identical central crop bounds and magnification. Dots disappear before choices appear. Holding a response key enlarges that image; no elements have been repositioned.]]		[[File:HAT_Reference_Stimulus_Details.png\|thumb\|center\|500px\|alt=Three equal central crops from the same trial: a red-majority dot cloud, three category choices, and an enlarged car image while the left response is held.\|Figure 3. Enlarged views from one trial, using identical central crop bounds and magnification. Dots disappear before choices appear. Holding a response key enlarges that image; no elements have been repositioned.]]
			<div style="clear: both; height: 24px;"></div>

	Display settings in the documented configuration: 452 dots; red RGB [199, 72, 50], blue RGB [77, 123, 161]. ImageSizePixels = 70 and SelectedImageScale = 1.5 give a 70-pixel base image and a 105-pixel selected image. Source-image resolution is separate from on-screen size.		Display settings in the documented configuration: 452 dots; red RGB [199, 72, 50], blue RGB [77, 123, 161]. ImageSizePixels = 70 and SelectedImageScale = 1.5 give a 70-pixel base image and a 105-pixel selected image. Source-image resolution is separate from on-screen size.

Jchuang: /* Single-Trial Timeline */

2026-10-08T22:02:33Z

Single-Trial Timeline

← Older revision		Revision as of 22:02, 8 October 2026
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	<div style="clear: both; height: 24px;"></div>		<div style="clear: both; height: 24px;"></div>
	[[File:HAT_Trial_Timeline.png\|thumb\|center\|600px\|alt=Trial order and requested timings: fixation 500 ms; moving dots 500 ms; delay 1600 ms; choice up to 5000 ms; confirmed choice 150 ms; intertrial interval 900 to 1100 ms. A 100 ms response hold occurs inside the choice window.\|Figure 4. Single-trial sequence and requested timings for the listed configuration; boxes are not to time scale. The 100 ms key hold occurs within the choice window.]]		[[File:HAT_Trial_Timeline.png\|thumb\|center\|600px\|alt=Trial order and requested timings: fixation 500 ms; moving dots 500 ms; delay 1600 ms; choice up to 5000 ms; confirmed choice 150 ms; intertrial interval 900 to 1100 ms. A 100 ms response hold occurs inside the choice window.\|Figure 4. Single-trial sequence and requested timings for the listed configuration; boxes are not to time scale. The 100 ms key hold occurs within the choice window.]]
			<div style="clear: both; height: 24px;"></div>

	The fixation marker remains during the delay. With the listed settings, a confirmed choice stays visible for 150 ms, followed by the intertrial interval (ITI). Correct and incorrect responses request distinct feedback sounds at ITI entry; a timeout skips confirmation and receives no feedback sound.		The fixation marker remains during the delay. With the listed settings, a confirmed choice stays visible for 150 ms, followed by the intertrial interval (ITI). Correct and incorrect responses request distinct feedback sounds at ITI entry; a timeout skips confirmation and receives no feedback sound.

Jchuang: /* Location */

2026-10-08T22:01:13Z

Location

← Older revision		Revision as of 22:01, 8 October 2026
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	Author: Jiancao Huang. Behavior, controls and state meanings follow the inspected C++ source (protocol 6.0); Figures 2 and 3 use its standalone renderer. Parameter values come from a recorded configuration declaring ProtocolVersion = 6.2-bci-hospital1500-flex; TaskReleaseID = 0.4.0-preintegration-hospital1500-flex; DataSchemaVersion = 2.		Author: Jiancao Huang. Behavior, controls and state meanings follow the inspected C++ source (protocol 6.0); Figures 2 and 3 use its standalone renderer. Parameter values come from a recorded configuration declaring ProtocolVersion = 6.2-bci-hospital1500-flex; TaskReleaseID = 0.4.0-preintegration-hospital1500-flex; DataSchemaVersion = 2.

	~~== Location ==~~

	~~Source (authorized access): [https://www.bci2000.org/svn/trunk/src/private/Application/HumanAssociationTask HumanAssociationTask in BCI2000 SVN]~~

	== See Also ==		== See Also ==

Jchuang: /* Breaks, completion and controls */

2026-10-08T22:00:04Z

Breaks, completion and controls

← Older revision		Revision as of 22:00, 8 October 2026
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	=== Breaks, completion and controls ===		=== Breaks, completion and controls ===

	The listed settings specify two scheduled breaks and a 450-main-~~trial cap~~. The round target counts completed rounds after the initial association, not simply the number of switches. The task ends at the configured target or cap; staff may stop earlier.		A round comprises trials under one association and is completed when the accuracy criterion is met. The listed settings specify two scheduled breaks and a cap of 450 main-task trials. The round target counts completed rounds after the initial association, not simply the number of switches. The task ends at the configured target or cap; staff may stop earlier.

	Space continues instruction and break pages; C repeats basic practice from its repeat page. Shift pauses the task. Release it, then press and release Shift again to resume. During dots, pausing waits until they disappear. In videos, Left / Right seeks by 5 seconds. Space or Enter acknowledges task completion.		Space continues instruction and break pages; C repeats basic practice from its repeat page. Shift pauses the task. Release it, then press and release Shift again to resume. During dots, pausing waits until they disappear. In videos, Left / Right seeks by 5 seconds. Space or Enter acknowledges task completion.

Jchuang: /* Visual Representation */

2026-10-08T21:55:38Z

Visual Representation

← Older revision		Revision as of 21:55, 8 October 2026
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	<div style="clear: both; height: 24px;"></div>		<div style="clear: both; height: 24px;"></div>

	[[File:HAT_Reference_Stimulus_Details.png\|thumb\|center\|~~550px~~\|alt=Three equal central crops from the same trial: a red-majority dot cloud, three category choices, and an enlarged car image while the left response is held.\|Figure 3. Enlarged views from one trial, using identical central crop bounds and magnification. Dots disappear before choices appear. Holding a response key enlarges that image; no elements have been repositioned.]]		[[File:HAT_Reference_Stimulus_Details.png\|thumb\|center\|500px\|alt=Three equal central crops from the same trial: a red-majority dot cloud, three category choices, and an enlarged car image while the left response is held.\|Figure 3. Enlarged views from one trial, using identical central crop bounds and magnification. Dots disappear before choices appear. Holding a response key enlarges that image; no elements have been repositioned.]]

	Display settings in the documented configuration: 452 dots; red RGB [199, 72, 50], blue RGB [77, 123, 161]. ImageSizePixels = 70 and SelectedImageScale = 1.5 give a 70-pixel base image and a 105-pixel selected image. Source-image resolution is separate from on-screen size.		Display settings in the documented configuration: 452 dots; red RGB [199, 72, 50], blue RGB [77, 123, 161]. ImageSizePixels = 70 and SelectedImageScale = 1.5 give a 70-pixel base image and a 105-pixel selected image. Source-image resolution is separate from on-screen size.

← Older revision		Revision as of 22:14, 8 October 2026
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	Author: Jiancao Huang. Behavior, controls and state meanings follow the inspected C++ source (protocol 6.0); Figures 2 and 3 use its standalone renderer. Parameter values come from a recorded configuration declaring ProtocolVersion = 6.2-bci-hospital1500-flex; TaskReleaseID = 0.4.0-preintegration-hospital1500-flex; DataSchemaVersion = 2.		Author: Jiancao Huang. Behavior, controls and state meanings follow the inspected C++ source (protocol 6.0); Figures 2 and 3 use its standalone renderer. Parameter values come from a recorded configuration declaring ProtocolVersion = 6.2-bci-hospital1500-flex; TaskReleaseID = 0.4.0-preintegration-hospital1500-flex; DataSchemaVersion = 2.

	~~== See Also ==~~

	~~See also: [https://www.bci2000.org/mediawiki/index.php/User_Reference:Operator_Module BCI2000 Operator Module]~~

	~~[[Category:Contributions]]~~
	~~[[Category:User Application]]~~