working memory fMRI task paradigm
Unreviewed
This is the "working memory" task used in the Human Connectome Project. The category specific representation task and the working memory task are combined into a single task paradigm. Participants were presented with blocks of trials that consisted of pictures of places, tools, faces and body parts (non-mutilated parts of bodies with no ânudityâ). Within each run, the 4 different stimulus types were presented in separate blocks. Also, within each run, ½ of the blocks use a 2-back working memory task and ½ use a 0-back working memory task (as a working memory comparison). A 2.5 second cue indicates the task type (and target
for 0-back) at the start of the block. Each of the two runs contains 8 task blocks (10 trials of 2.5 seconds each, for 25 seconds) and 4 fixation blocks (15 seconds). On each trial, the stimulus is presented for 2 seconds, followed by a 500 ms inter-task interval (ITI).
Potential Additional Event Related Contrasts: Researchers can also use the TAB.txt E-Prime
data files to generate the following potential event-related contrasts:
http://humanconnectome.org/documentation/S500/HCP_S500+MEG2_Release_Appendix_VI.pdf
http://humanconnectome.org/documentation/S500/HCP_S500+MEG2_Release_Reference_Manual.pdf
References for Working Memory: Localizer (Drobyshevsky et al. 2006); Reliable across subjects (Drobyshevsky et al. 2006) and time (Caceres et al. 2009).
Definition contributed by Anonymous
for 0-back) at the start of the block. Each of the two runs contains 8 task blocks (10 trials of 2.5 seconds each, for 25 seconds) and 4 fixation blocks (15 seconds). On each trial, the stimulus is presented for 2 seconds, followed by a 500 ms inter-task interval (ITI).
Potential Additional Event Related Contrasts: Researchers can also use the TAB.txt E-Prime
data files to generate the following potential event-related contrasts:
http://humanconnectome.org/documentation/S500/HCP_S500+MEG2_Release_Appendix_VI.pdf
http://humanconnectome.org/documentation/S500/HCP_S500+MEG2_Release_Reference_Manual.pdf
References for Working Memory: Localizer (Drobyshevsky et al. 2006); Reliable across subjects (Drobyshevsky et al. 2006) and time (Caceres et al. 2009).
Definition contributed by Anonymous
working memory fMRI task paradigm has been asserted to measure the following CONCEPTS
as measured by the contrast:
as measured by the contrast:
Phenotypes associated with working memory fMRI task paradigm
Disorders
No associations have been added.Traits
No associations have been added.Behaviors
No associations have been added. CONDITIONS
Experimental conditions are the subsets of an experiment that define the relevant experimental manipulation.
CONTRASTS
In the Cognitive Atlas, we define a contrast as any function over experimental conditions. The simplest contrast is the indicator value for a specific condition; more complex contrasts include linear or nonlinear functions of the indicator across different experimental conditions.
INDICATORS
No indicators have yet been associated.
An indicator is a specific quantitative or qualitative variable that is recorded for analysis. These may include behavioral variables (such as response time, accuracy, or other measures of performance) or physiological variables (including genetics, psychophysiology, or brain imaging data).
Term BIBLIOGRAPHY
Email: contact@cognitiveatlas.org