| abstract |
Absent (null) when no source gave one; never an empty string |
| abstract_provider |
The source whose abstract abstract is |
| acquired_count |
Number for whom data were acquired or who were scanned |
| acquisition_duration_seconds |
Total usable acquisition or recording duration in seconds |
| acquisition_type |
The concrete subclass this record instantiates |
| acquisition_voxel_size_mm |
Original acquisition voxel size [x, y, z] in millimeters, before interpolatio... |
| acquisitions |
The acquisition protocols used to collect data for this task |
| age_maximum |
Oldest age reported for the group |
| age_mean |
Mean participant age in the unit given by age_unit |
| age_median |
Median participant age for the group |
| age_minimum |
Youngest age reported for the group |
| age_standard_deviation |
Standard deviation of participant age in the unit given by age_unit |
| age_unit |
Unit used for age summaries, normally years but potentially months, weeks, or... |
| age_unit_normalized |
age_unit folded onto a fixed set |
| agent |
The drug, agent, or stimulation target this arm received, as the source names... |
| allocation |
How participants came to be in the arm they were in |
| alpha_level |
Family-wise, false-discovery, or nominal alpha threshold when reported |
| analyses |
Distinct analyses or inferential tests reported by the study, including those... |
| analysis |
For a result, the analysis whose findings these are |
| analysis_id |
Identifier of the sibling Analysis record for this component, when it is sepa... |
| analysis_type |
The component's own method, when it is known and differs from the others |
| anchor_kind |
For an anchor, what it defines |
| approached_count |
Number of prospective participants approached for this group |
| arm |
The arm this cohort was allocated to |
| arm_kind |
What class of thing this arm received |
| arms |
The arms of the study, active and comparator alike |
| assessment |
The assessment whose measurements supply a continuous term, **including when ... |
| assessment_type |
Broad type, such as cognitive test, clinical scale, diagnostic interview, que... |
| assessments |
Assessments whose measurements were used in or selected the sample for this a... |
| assignment_structure |
How the compared cohorts came about |
| atlas |
The atlas, parcellation or template it came from, as named -- AAL, WFU_Pickat... |
| authors |
Author names in published order |
| axis |
What the qualifier varies |
| bibliography |
The paper's bibliographic facts, the parsed paper's Bibliography unchanged:... |
| blinding |
Who was kept unaware of the assignment |
| brain_coverage |
How much of the brain the acquired volume contained |
| caption |
Table caption describing the table's contents |
| category |
The distribution bucket counted by this entry, labelled as the study writes i... |
| category_normalized |
category folded onto the answer set for the distribution this entry belongs... |
| cells |
What this contrast compared: one entry per level of a model term that entered... |
| classes |
The classes discriminated |
| clinical_characteristics |
Disease duration, severity, treatment status, or other clinically relevant su... |
| cluster_extent_threshold |
Minimum surviving cluster extent in voxels, vertices, or the unit stated in t... |
| clusterwise_threshold_value |
Numeric cluster-level threshold for retaining clusters |
| column_headings |
Ordered leaf column headings retained to aid interpretation of extracted valu... |
| competing_models |
Other models the reported model was compared against |
| component_id |
Identifier of the component or latent variable within the decomposition, as r... |
| component_label |
The source's name for the component, such as a network label, or for what a l... |
| components |
The independently defined effects that were combined |
| condition |
The experimental condition this class corresponds to, when it is one |
| condition_kind |
What kind of state this was: an active task state, a rest or fixation period,... |
| conditions |
The conditions this task was made of |
| connectivity_method |
Method used to estimate connectivity |
| consented_count |
Number who consented or assented to participate |
| coordinate_count |
Number of reported coordinate rows or points in the normalized table represen... |
| coordinate_sets |
Every group of coordinates the paper reports, in its tables or its text, with... |
| coordinate_space |
Coordinate reference space or template the spatial results are reported in, s... |
| correction_regions |
The regions correction was restricted to -- what correction_scope: roi name... |
| correction_scope |
Whether the multiple-comparison correction searched the whole acquired volume... |
| corrections |
Notices attached to the paper -- errata, retractions, expressions of concern ... |
| count |
Number of participants assigned to this category |
| crossblock_covariance_percent |
Percentage of crossblock covariance this latent variable accounts for, as rep... |
| decoded_variable |
The variable the classifier or discriminability test predicted |
| defines_regions |
Regions this analysis produced: a localizer's clusters, or peaks of a contras... |
| definition |
Precise statement of the tested effect in the source's own words, minimally c... |
| definition_method |
How the region was delimited, which is a statement about independence: one dr... |
| degrees_of_freedom_denominator |
Denominator degrees of freedom, used alone for t, correlation, and chi_square |
| degrees_of_freedom_numerator |
Numerator degrees of freedom, normally populated only for f and likelihood_ra... |
| denominator |
Number of participants used as the denominator for the percentage |
| description |
Overall study design in narrative form, including observational or interventi... |
| design |
The study's design outside its tasks: how participants were assigned, the arm... |
| design_type |
How the task's events were modelled in time |
| details |
The method that produced the map and its method-specific payload |
| details_type |
The concrete details subclass carried by this payload |
| determination |
|
| device |
The scanner, amplifier, or recording system this acquisition was made on, by ... |
| devices |
The scanners, amplifiers, or recording systems the study collected data on |
| diagnostic_instrument |
The study assessment that established this group's defining condition -- the ... |
| diagnostic_system |
Classification system and edition under which this group's `medical_condition... |
| dimensionality_selection_method |
How the number of components was chosen, as reported -- minimum description l... |
| direction |
How this cell entered the contrast: the weight's sign for a categorical level... |
| directionality |
Whether this edge is genuinely directed |
| doi |
The DOI of the version of record |
| echo_time_seconds |
Echo time in seconds, as a list of one value per echo |
| edges |
Named region pairs, when the source reports specific edges |
| education_summary |
Aggregate education level and the measurement or coding system used |
| eeg_channel_count |
Number of simultaneously recorded EEG channels |
| eeg_placement_scheme |
Electrode placement system, such as the 10-20 or 10-10 system |
| eeg_reference |
Reference scheme and location used for the raw recording |
| effect |
What was tested about the map |
| enrolled_count |
Number enrolled after screening and before acquisition |
| estimator |
Estimation method, such as OLS, WLS, maximum likelihood, restricted maximum l... |
| ethnicity_distribution |
Aggregate ethnic distribution using the study-reported category labels |
| excluded_count |
Number excluded after consent, enrollment, acquisition, and quality control |
| exclusion_criteria |
Screening, imaging-safety, clinical, behavioral, or quality-control criteria ... |
| explanation |
What specifically could not be represented, in the source's own terms |
| external_datasets |
Named external datasets used, cited, or made available by the study |
| family |
The statistic used, independent of the thresholding procedure |
| footer |
Table notes, abbreviations, threshold statements, and footnotes |
| functional_form |
Shape of the term's relationship to the measure |
| gender_distribution |
Aggregate self-described gender distribution, kept separate from phenotypic s... |
| generalization |
Train/test split for cross-decoding, when the analysis generalized across set... |
| group |
The cohort this entry refers to, by identifier |
| groups |
The participant cohorts the analysis ran on, and how many participants each c... |
| handedness_distribution |
Aggregate handedness distribution |
| height_threshold_type |
Meaning of height_threshold_value, such as p, q, t, z, or F |
| height_threshold_value |
The threshold applied to each element's statistic, before correction and befo... |
| hrf_model |
The haemodynamic response basis the design matrix was built with: a canonical... |
| hypothesis |
The study's own statement of what it expected to find, quoted from the paper ... |
| id |
|
| identifiers |
Every identifier known for the paper, the parsed paper's header identifiers u... |
| image_units |
Units encoded in the PET image, such as Bq/mL or SUV |
| implementation |
Procedure that computed the conjunction, recorded separately from the hypothe... |
| inclusion_criteria |
Eligibility requirements that a participant had to satisfy for membership in ... |
| inference_level |
Level at which inference is made, such as voxel, vertex, cluster, region, net... |
| inference_settings |
The thresholding and correction this analysis was reported under, by identifi... |
| inference_target |
What the statistical test was about: the strength of a connection, which of s... |
| inputs_from |
The models whose fitted output this model was estimated on: the first-level G... |
| instructions |
Task- or paradigm-specific instructions given to participants |
| interaction_with |
The other terms this term is a product of -- what makes this column an intera... |
| interpretations |
The source's own statement of what this analysis found and what it means, typ... |
| is_healthy |
Whether this cohort is free of medical, neurological and psychiatric conditio... |
| is_thresholded |
Whether the available map has already been thresholded |
| issue |
|
| journal |
|
| keywords |
|
| kind |
What kind of test these cells describe, stated as well as encoded |
| label |
The source's wording for this level in this comparison, when it differs from ... |
| language |
Languages of the article, as the E-utilities API reports them -- the three-le... |
| level |
The level represented by this cell, matching a `FactorLevel |
| levels |
The levels of a categorical term, and for each the entities carrying it |
| license |
The paper's licence: the version of record's, or the latest preprint's while ... |
| license_id |
Which licence, as OpenAlex's licence slugs name them (cc-by, cc-by-nc, |
| magnetic_field_strength_tesla |
Nominal static magnetic field strength in tesla |
| manufacturer |
Company that made the device, as reported, such as Siemens, GE, Philips, Brai... |
| map_quantity |
What the values of the reported map represent -- a loading, a weight, a PLS s... |
| map_type |
Content type, such as statistic, effect estimate, variance, z-score, t-score,... |
| measure |
The scientific quantity of the map, by identifier, independent of the statist... |
| measures |
The scientific quantities the study measured, used by one or more analyses |
| mediation |
The mediation model this effect's quantity is a path through |
| mediator |
The intervening term, by identifier |
| medical_condition |
Medical, neurological, psychiatric, developmental, or physiological condition... |
| medication_status |
Whether the cohort was medicated, unmedicated, drug-naive, or withdrawn, and ... |
| medications |
The drugs or other agents this cohort was taking, as the source names them, o... |
| method |
The algorithm that produced the components, which decides what their values a... |
| method_label |
The method's name as the source gives it |
| mirror_of |
Present only on an analysis the builder derived by reversing another one, and... |
| modality |
Imaging or recording modality |
| modality_label |
The source's own name for the modality or recording technique, verbatim |
| mode_of_administration |
Tracer administration mode, such as bolus, infusion, or bolus plus infusion |
| model |
Model or product name of the device, as reported, such as Prisma, Signa, Achi... |
| model_estimation |
The model this analysis's contrast was taken from: its family, estimator, sta... |
| model_estimations |
Model estimation records used by one or more analyses |
| model_family |
Normalized statistical model family, which is the queryable form |
| model_representation_notes |
Model components that could not be represented or were represented only appro... |
| model_settings |
Essential estimator, variance, autocorrelation, covariance, regularization, a... |
| model_type |
The source's own wording for the model, minimally cleaned, such as mass- univ... |
| modulatory_input |
Modulatory input of the model, for DCM and related methods |
| mr_acquisition_type |
Acquisition dimensionality, such as 2D or 3D; useful for distinguishing proto... |
| multiple_comparison_method |
Correction method, such as FWE, FDR, Bonferroni, permutation, Monte Carlo, or... |
| n |
Number of participants from this cohort included in this analysis |
| name |
Short arm label as the source states it, for example methylphenidate, sham tD... |
| neighborhood_definition |
Voxel or vertex adjacency or connectivity rule used for cluster formation |
| neural_representation |
How the neural pattern was defined, such as the voxel set or time window used |
| nirs_channel_count |
Total number of NIRS channels, including short-separation channels |
| nirs_placement_scheme |
Standard placement system or listed optode positions, such as 10-20, Cz, or P... |
| nirs_system_type |
Instrument principle, such as continuous-wave, frequency-domain, or time-doma... |
| null_hypothesis |
Which null hypothesis was tested |
| number_of_tests |
Number of statistical tests considered by the multiple-comparison procedure |
| number_of_volumes |
Number of acquired volumes contributing to the recording, when reported; a pr... |
| oa_status |
|
| order |
Position of this occasion in the study's sequence, counting from 1 |
| other_characteristics |
Cohort traits that are true but not selective: the entries moved out of `popu... |
| outcome |
Whether anything survived the threshold this analysis was tested at: a cluste... |
| outcome_summary |
What the study's analyses found, taken together: derived from `result_reporti... |
| pages |
|
| paradigm |
The name with every qualifier that says how this version varies taken off and... |
| paradigm_category |
The paradigm this task is grouped under, decided by task normalization across... |
| path |
The path through the mediation model represented by this effect's map |
| percentage |
Percentage of the relevant group in this category |
| performance_measures |
Behavioral variables recorded and summaries used to verify task performance |
| performance_metrics |
The performance measures reported for this map, one entry each |
| permutation_count |
Number of permutations, randomizations, or simulations used for inference |
| pmcid |
PubMed Central's copy of the version of record |
| pmid |
PubMed's record of the version of record |
| polarity_semantics |
Whether the sign of the reported map carries meaning |
| population_characteristics |
How this cohort deviates from the typical, where no other field covers it... |
| preprint_dois |
Every DOI a preprint server registered for the paper |
| preprint_pmcid |
PubMed Central's copy of the preprint |
| preprint_pmid |
PubMed's record of the preprint, which PubMed types Preprint |
| preprocessing |
The pipelines that produced the data this model was fitted to |
| preprocessings |
Preprocessing pipelines applied before statistical analysis |
| presentation_software |
Stimulus-presentation software name, version, and operating system when repor... |
| prespecification |
Whether this contrast was planned before the data were seen or arrived at aft... |
| provider |
The metadata service the facts came from |
| publication_status |
preprint when a preprint_ field is set and doi, pmid and pmcid are ... |
| publication_types |
PubMed publication types for this record, verbatim as the E-utilities API ret... |
| publication_year |
Year in which the study was first published or made publicly available |
| pulse_sequence_type |
General pulse sequence family, such as EPI, MPRAGE, SPGR, or spin echo |
| purpose |
What this table is for |
| qualifier |
The qualifier as the name prints it |
| race_distribution |
Aggregate racial distribution using the study-reported category labels |
| reason |
The kind of obstacle that prevented structuring, selected from a short vocabu... |
| reason_first_class_type_not_used |
Why no first-class details subclass fits this method |
| reason_no_modality_class_used |
Why this is not an MRI, EEG, FNIRS, or PET record |
| reconstructed_voxel_size_mm |
Reconstructed PET voxel size [x, y, z] in millimeters |
| recorded_signal_types |
Raw or derived channel signal types, such as continuous-wave amplitude, optic... |
| recording_type |
Recording organization, such as continuous, discontinuous, or epoched |
| recruitment_dates |
Free-text recruitment period when the source does not support a precise norma... |
| recruitment_method |
How, where, and from what setting participants were recruited |
| reference_ids |
references resolved to the works they cite, as DOIs or PMIDs, through the p... |
| reference_value |
Numeric reference this measure was compared against, when reported -- chance ... |
| references |
Works the source cites for this task, exactly as it writes them: an author-ye... |
| region |
The region whose signal supplies this term: a seed timecourse, an ROI mean co... |
| region_type |
What kind of thing the region is, which definition_method does not settle: ... |
| regions |
The regions the analysis ran over -- its search space, what `spatial_scope: r... |
| relation |
Direction of this measure relative to its own reference_value |
| relation_to_intervention |
Where this occasion sits relative to the intervention |
| repetition_time_seconds |
Time between the start of successive acquired volumes, in seconds |
| reporting_framework |
The classification system the study used for these categories, in its own wor... |
| response_modality |
How participants responded |
| result_kind |
For a result, the kind of analysis that produced it |
| result_reporting |
Whether the paper reports inferential analyses of its own |
| role |
What these coordinates are for |
| salience_threshold |
The criterion deciding which elements count as reliable contributors, as repo... |
| sample_overlap_count |
How many of this group were in that prior report, when the source says so |
| sample_source |
Where this group's participants came from |
| sample_source_reference |
The dataset name, or the prior publication as the source cites it: an author-... |
| sampling_frequency_hz |
Sampling frequency of the recording in hertz |
| scan_type |
Whether the analyzed PET data were acquired or summarized as a static or dyna... |
| search_volume |
Reported search volume, mask size, or number of vertices or voxels used for i... |
| second_block |
What the brain block was decomposed against, one value per additional block, ... |
| second_block_assessments |
The measures forming a behavioural or clinical block, by identifier, when the... |
| second_block_detail |
What each non-assessment block held, in the source's words: the seed regions ... |
| seed_regions |
Seed or source regions, by identifier |
| selection_criterion |
How this component was selected for reporting |
| server |
Named by the producer from the DOI, so that no consumer needs a table of prep... |
| sex_distribution |
Aggregate phenotypic sex distribution |
| short_channel_count |
Number of short-separation channels; zero indicates none |
| similarity_metric |
Similarity or distance metric |
| smoothing_fwhm_mm |
Full width at half maximum of the applied spatial smoothing kernel, in millim... |
| socioeconomic_status_summary |
Aggregate socioeconomic status and the instrument or proxy used to measure it |
| software |
Software packages or methods used, including version and revision identifiers |
| source_definition |
The source's own definition of the term, and the origin of a continuous term ... |
| source_detector_distances_mm |
Reported source-detector separations in millimeters |
| source_label |
The paper's own term for the measure |
| source_path |
Repository path or external location of the raw or normalized table represent... |
| source_region |
Source region of the edge, by identifier |
| source_table_analysis |
The key of the coordinate-parse analysis this analysis's results were read fr... |
| spatial_resolution_mm |
Reported reconstructed spatial resolution, such as FWHM dimensions, in millim... |
| spatial_scope |
Spatial domain of the analysis modelled |
| spatial_unit |
The element this model was fitted over |
| species |
The species of this cohort |
| specific_metric |
Named metric when type is intentionally broad, such as fractional anisotropy,... |
| stage |
Stage of analysis, in the source's terms: run, session, subject and group are... |
| stated_as |
The statement exactly as the source gave it: a licence URL, a licence name, o... |
| stated_by |
The source whose statement this is |
| statistic |
The statistic this effect was tested with, and its degrees of freedom |
| statistic_type |
Statistical quantity encoded by the map, when applicable |
| statistical_maps |
Statistical maps made available for this analysis |
| steps |
Ordered free-text preprocessing operation names, listed in execution order; e... |
| stimuli |
The materials presented to participants, in the source's own terms -- the sti... |
| stimulus_content |
What the task's stimuli were about when that holds across all its conditions ... |
| stimulus_modality |
The sensory channel the stimuli were delivered through |
| structured_details |
JSON-encoded method-specific payload, when the method has structure worth kee... |
| table |
The table this set was read from |
| table_number |
Printed identifier such as Table 2 or Supplementary Table S4 |
| tables |
The source tables reporting results for this analysis |
| target_region |
Target region of the edge, by identifier |
| target_regions |
Target regions, by identifier |
| tasks |
The participant paradigms that contextualize this analysis |
| term |
The model term this cell belongs to, by identifier |
| terms |
The terms this stage was specified with -- the columns of its design matr... |
| text_excerpt |
For a set read from the text, the sentences it was read from: the sentence ho... |
| tfce_parameters |
TFCE parameters such as height and extent exponents when reported |
| tfce_used |
Whether threshold-free cluster enhancement was used |
| time_from_intervention |
Elapsed time between the intervention and this occasion, in the source's own ... |
| timepoints |
The occasions on which data were collected |
| title |
Table title, when distinct from the caption |
| total_components |
Number of components or latent variables the decomposition produced |
| tracer_name |
Name of the injected tracer compound |
| tracer_radionuclide |
Radioisotope labeling the tracer, such as C11, F18, or O15 |
| type |
Normalized quantity, for cross-study queries |
| unit |
The unit the measure is reported in, when the source gives one and it carries... |
| uptake_time_seconds |
Interval from tracer administration to the start of the analyzed scan window,... |
| url |
Resolvable location of the map or its archive landing page |
| validation_scheme |
Cross-validation or resampling scheme, such as leave-one-run-out |
| value |
The value as reported, in the source's own scale: a percentage and a proporti... |
| variance_explained_percent |
Percentage of the brain block's variance this component accounts for, as repo... |
| variant_qualifiers |
The words of name that paradigm leaves out, each with the axis it varies ... |
| variation_level |
Whether this term moves within a participant or only across the sample |
| volume |
|
| wavelengths_nm |
Nominal emitted wavelengths in nanometers |