Visuospatial Selective Attention Task Study (5-Box)

Description:

In this study, the subject performs the five-box task. The five-box task was first developed by Jeanne Townsend and Marissa Westerfield in the laboratory of Eric Courchesne at UCSD (1996). The subject's screen showed 5 empty boxes arranged horizontally above the center of the screen. A plus sign, at the center of the screen, was used as the fixation point throughout the experiment. Each block highlighted a different box, indicated by a variant color, which was the attended location for that bout. When the task began, a white disc would appear in any one of the boxes for 100 ms with a stimulus onset asynchrony (SOA) of between 250 and 900 ms. The subject was instructed to press the response button whenever the disc appeared at the attended location. Data were collected from 238 scalp, neck, face and eye locations using the Biosemi Active Two system. Data referenced to the right mastoid. A single-subject EEG data set recorded at the Swartz Center, UCSD recorded by Arnaud Delorme, Julie Onton, and Scott Makeig, has been provided.

Summary:

Number of Sessions: 1
Number of Subjects: 1
Type of Subject Groups: normal
All subjects are considered healthy and normal: Yes
Number of Channels (min to max): 238 to 238
Recorded Modalities: EEG (BIOSEMI ActiveTwo)
Total Size: 509.3 MB
License Type: CC0

Publications:

Makeig S, Onton J. ERP features and EEG dynamics: An ICA perspective In: Oxford Handbook of Event-Related Potential Components, Ed. Luck S & Kappenman E, 2009 in press.
publications/MakeigOnton_ERP09.pdf
Delorme A, Westerfield M, Makeig S. Medial prefrontal theta bursts precede rapid motor responses during visual selective attention. J Neurosci 27:11949-59, 2007.
publications/Delorme_JNeurosci07.pdf

Experimenters:

Julie Onton (Project Scientist)
Arnaud Delorme (Project Scientist)
Scott Makeig (Principal Investigator)

Table of Session Information:

Session Purpose Lab Id Subject EEG Sampling Rate (Hz) Notes EEG Recordings Channel Locations Number of Channels Channel Location Type
Lab Id Group Gender YOB Age Hand
1 data collection 1

1

normal

NA

NA

NA

NA

 256 The data has been split into five EEGLAB datasets (each ~100Mb), each concatenating several 1-minute blocks of data in which the subject covertly attended to one of the five possible target locations. The dataset number corresponds to which box the subject is attending to (1:leftmost to 5:rightmost). session/1/eeg_recording_1.set session/1/eeg_recording_2.set session/1/eeg_recording_3.set session/1/eeg_recording_4.set session/1/eeg_recording_5.set

238

10-20

Study Paradigm and Context

Description Tag
During the experiment, subjects are sitting. Context/Sitting

Table of Event Codes:

Event Code Condition
Label Description Tag
11 Target Box 1 Subject covertly attends to box 1, or the left-most box, in which a white disc appears for 100 ms. Subject response is elicited. /Time-Locked Event/Stimulus/Visual/Fixation Point, /Time-Locked Event/Stimulus/Visual/Shape/Cross, /Time-Locked Event/Stimulus/Visual/Shape/Rectangle/Square, /Time-Locked Event/Stimulus/Visual/Size/1.6 cm, /Time-Locked Event/Stimulus/Visual/Shape/Ellipse/Circle, /Time-Locked Event/Stimulus/Visual/Size/1.4 cm, /Time-Locked Event/Stimulus/Visual/Uniform Color/White, /Time-Locked Event/Stimulus/Visual/Background/Uniform Color/Black, /Time-Locked Event/Stimulus/Visual/Screen Location/Center Displacement/5.5 deg, /Time-Locked Event/Response/Hand/Right Hand, /State/Awake/Under time pressure/Attention/Covert, /State/Awake/Under time pressure/Attention/To a Location/Left, /Time-Locked Event/Stimulus/Target
22 Target Box 2 Subject covertly attends to box 2, or the box in the second position from the left, in which a white disc appears for 100 ms. Subject response is elicited. /Time-Locked Event/Stimulus/Visual/Fixation Point, /Time-Locked Event/Stimulus/Visual/Shape/Cross, /Time-Locked Event/Stimulus/Visual/Shape/Rectangle/Square, /Time-Locked Event/Stimulus/Visual/Size/1.6 cm, /Time-Locked Event/Stimulus/Visual/Shape/Ellipse/Circle, /Time-Locked Event/Stimulus/Visual/Size/1.4 cm, /Time-Locked Event/Stimulus/Visual/Uniform Color/White, /Time-Locked Event/Stimulus/Visual/Background/Uniform Color/Black, /Time-Locked Event/Stimulus/Visual/Screen Location/Center Displacement/2.7 deg, /State/Awake/Under time pressure/Attention/Covert, /State/Awake/Under time pressure/Attention/To a Location/Left, /Time-Locked Event/Stimulus/Target
33 Target Box 3 Subject covertly attends to box 3, or the middle box, in which a white disc appears for 100 ms. Subject response is elicited. /Time-Locked Event/Stimulus/Visual/Fixation Point, /Time-Locked Event/Stimulus/Visual/Shape/Cross, /Time-Locked Event/Stimulus/Visual/Shape/Rectangle/Square, /Time-Locked Event/Stimulus/Visual/Size/1.6 cm, /Time-Locked Event/Stimulus/Visual/Shape/Ellipse/Circle, /Time-Locked Event/Stimulus/Visual/Size/1.4 cm, /Time-Locked Event/Stimulus/Visual/Uniform Color/White, /Time-Locked Event/Stimulus/Visual/Background/Uniform Color/Black, /Time-Locked Event/Stimulus/Visual/Screen Location/Center Displacement/0 deg, /Time-Locked Event/Response/Hand/Right Hand, /State/Awake/Under time pressure/Attention/Covert, /State/Awake/Under time pressure/Attention/To a Location/Center, /Time-Locked Event/Stimulus/Target
44 Target Box 4 Subject covertly attends to box 4, or the box in the second position from the right, in which a white disc appears for 100 ms. Subject response is elicited. /Time-Locked Event/Stimulus/Visual/Fixation Point, /Time-Locked Event/Stimulus/Visual/Shape/Cross, /Time-Locked Event/Stimulus/Visual/Shape/Rectangle/Square, /Time-Locked Event/Stimulus/Visual/Size/1.6 cm, /Time-Locked Event/Stimulus/Visual/Shape/Ellipse/Circle, /Time-Locked Event/Stimulus/Visual/Size/1.4 cm, /Time-Locked Event/Stimulus/Visual/Uniform Color/White, /Time-Locked Event/Stimulus/Visual/Background/Uniform Color/Black, /Time-Locked Event/Stimulus/Visual/Screen Location/Center Displacement/2.7 deg, /State/Awake/Under time pressure/Attention/Covert, /State/Awake/Under time pressure/Attention/To a Location/Right, /Time-Locked Event/Stimulus/Target
55 Target Box 5 Subject covertly attends to box 5, or the box in the right-most box, in which a white disc appears for 100 ms. Subject response is elicited. /Time-Locked Event/Stimulus/Visual/Fixation Point, /Time-Locked Event/Stimulus/Visual/Shape/Cross, /Time-Locked Event/Stimulus/Visual/Shape/Rectangle/Square, /Time-Locked Event/Stimulus/Visual/Size/1.6 cm, /Time-Locked Event/Stimulus/Visual/Shape/Ellipse/Circle, /Time-Locked Event/Stimulus/Visual/Size/1.4 cm, /Time-Locked Event/Stimulus/Visual/Uniform Color/White, /Time-Locked Event/Stimulus/Visual/Background/Uniform Color/Black, /Time-Locked Event/Stimulus/Visual/Screen Location/Center Displacement/5.5 deg, /State/Awake/Under time pressure/Attention/Covert, /State/Awake/Under time pressure/Attention/To a Location/Right, /Time-Locked Event/Stimulus/Target
201 Button Press Subject responds to the 'target' events with a button press. /Time-Locked Event/Response/Button Press, /Time-Locked Event/Response/Hand/Right Hand

Contact:

For data results or more information regarding this study contact: Arnaud Delorme
phone: arno@salk.edu
phone: 1-858-458-1927 x 15

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License link

This data was recorded under the approval of the Institutional Review Board (IRB) of the University of California, San Diego (#071254).