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NIMH Data Archive
NDA ABCD CCF OAI NIAAADA AMP SCZ HEAL

Stop Signal Reaction Time

2,027 Shared Subjects

N/A
Clinical Assessments
Questionnaire
12/11/2014
ssrt01
01/05/2024
View Change History
01
Definition
Submission Template
Query Element Name Data Type Size Required Description Value Range Notes Aliases
subjectkey GUID Required The NDAR Global Unique Identifier (GUID) for research subject NDAR*
src_subject_id String 20 Required Subject ID how it's defined in lab/project
interview_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY
interview_age Integer Required Age in months at the time of the interview/test/sampling/imaging. 0::1440 Age is rounded to chronological month. If the research participant is 15-days-old at time of interview, the appropriate value would be 0 months. If the participant is 16-days-old, the value would be 1 month.
sex String 20 Required Sex of subject at birth M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported gender
Query prs Float Recommended Mean probability of responding on stop-signal trials ssrt_p
Query ssd Float Recommended Mean stop-signal delay ssrt_ssd
Query ssrt Float Recommended Mean stop-signal reaction time ssrt_ssrt, stop_signal_nogo
Query sr_rt Float Recommended Mean reaction time on signal-respond trials ssrt_ss_rt
Query ns_rt Float Recommended Mean reaction time on no-signal trials ssrt_ns_rt, stop_signal_go
Query ns_hit Float Recommended Mean percentage of correct responses on no-signal trials ssrt_ns_hit
Query ns_fa Float Recommended Mean percentage of missed responses on no-signal trials ssrt_miss
Query z_p Float Recommended A z-score and the corresponding p-value to determine whether subjects inhibit significantly more or less than 50% of the time ssrt_zscore
Query ssrt_pvalue Float Recommended A p-value for the z-score to determine whether subjects inhibit significantly more or less than 50% of the time
ncttsk String 250 Recommended Name of task. experiment_name
Query groups Integer Recommended Group 0;1 0=Control; 1=Case group
Query block_number Integer Recommended Block Number block
version_form String 121 Recommended Form used/assessment name
session_det String 250 Recommended session details
stime String 20 Recommended Session time sessiontime
Query trial Integer Recommended Trial number 0::9999; -777; -999 1 = first; 2= second; 3=third; 4=fourth; 5=fifth; 6=sixth; etc; -777=NA, -999=missing
procedureblock String 20 Recommended signifies practice (PracProc) vs real trials (StopProc)
proceduretrial String 20 Recommended Trial type
runningblock String 20 Recommended signifies each block
Query sst_bk1_direction_errors Float Recommended number of incorrect Go trials. sst_bk2_direction_errors, sst_ses_direction_errors
Query sst_bk1_endtrial Float Recommended End Trial. Total recorded trials of block sst_bk2_endtrial
Query sst_bk1_ladder1mean Float Recommended mean of all SSD values from Ladder 1. sst_bk2_ladder1mean, sst_ses_ladder1mean
Query sst_bk1_ladder2mean Float Recommended mean of all SSD values from Ladder 2. sst_bk2_ladder2mean, sst_ses_ladder2mean
Query sst_bk1_mean_rt Float Recommended mean RT on all correct Go trials (where RT > 0) sst_bk2_mean_rt, sst_ses_mean_rt
Query sst_bk1_median_rt Float Recommended median RT on all correct Go trials (where RT > 0) sst_bk2_median_rt, sst_ses_median_rt
Query sst_bk1_pctinhib_ladder1 Float Recommended percent inhibition on Stop trials from Ladder 1. sst_bk2_pctinhib_ladder1, sst_ses_pctinhib_ladder1
Query sst_bk1_pctinhib_ladder2 Float Recommended percent inhibition on Stop trials from Ladder 2. sst_bk2_pctinhib_ladder2, sst_ses_pctinhib_ladder2
Query bs_cor_go_percent_total Float Recommended Percentage of correct "Go" trials (cor_go_counts_total / go_total) sst_bk1_percent_go_response, sst_bk2_percent_go_response, sst_ses_percent_go_response
Query sst_bk1_percent_inhib Float Recommended percent inhibition on all Stop trials. sst_bk2_percent_inhib, sst_ses_percent_inhib
Query sst_bk1_quant_rt Float Recommended quantile calculation of all correct Go RT values (from selecting point in Correct Go RT distribution based on Block 1 Quantile Value) sst_bk2_quant_rt, sst_ses_quant_rt
Query sst_bk1_quantilevalue Float Recommended 1 minus total percent inhibition on all Stop trials. sst_bk2_quantilevalue, sst_ses_quantilevalue
Query sst_bk1_ssd50 Float Recommended mean of all SSD values from both ladders. sst_bk2_ssd50, sst_ses_ssd50
Query sst_bk1_ssrt Float Recommended median RT (from correct Go trials, where RT > 0) minus the Block 1 Quantile Value; This is an alternative, though less optimal, method for calculating SSRT. sst_bk2_ssrt, sst_ses_ssrt
Query sst_bk1_ssrt_quant Float Recommended SSRT. Quantile RT minus SSD50 (mean of all SSD values from both ladders). sst_bk2_ssrt_quant, sst_ses_ssrt_quant
Query bs_cor_go_rt_std_total Float Recommended Standard deviation of response times for all correct "Go" trials sst_bk1_stdev_rt, sst_bk2_stdev_rt, sst_ses_stdev_rt
acc_go_nov_cong Float Recommended Average accuracy on go trials in novel condition, congruent mapping
acc_go_nov_incong Float Recommended Average accuracy on go trials in novel condition, incongruent mapping
rt_nogo_fam_cong Float Recommended Average reaction time on no-go trials in familiar condition, congruent mapping
rt_nogo_fam_incong Float Recommended Average reaction time on no-go trials in familiar condition, incongruent mapping
rt_nogo_nov_cong Float Recommended Average reaction time on no-go trials in novel condition, congruent mapping
rt_nogo_nov_incong Float Recommended Average reaction time on no-go trials in novel condition, incongruent mapping
rt_go_fam_cong Float Recommended Average reaction time on go trials in familiar condition, congruent mapping
rt_go_fam_incong Float Recommended Average reaction time on go trials in familiar condition, incongruent mapping
rt_go_nov_cong Float Recommended Average reaction time on go trials in novel condition, congruent mapping
rt_go_nov_incong Float Recommended Average reaction time on go trials in novel condition, incongruent mapping
ca10 Float Recommended Age (years) subject_age
acc_nogo_fam_cong Float Recommended Average accuracy on no-go trials in familiar condition, congruent mapping
acc_nogo_fam_incong Float Recommended Average accuracy on no-go trials in familiar condition, incongruent mapping
acc_nogo_nov_cong Float Recommended Average accuracy on no-go trials in novel condition, congruent mapping
acc_nogo_nov_incong Float Recommended Average accuracy on no-go trials in novel condition, incongruent mapping
acc_go_fam_cong Float Recommended Average accuracy on go trials in familiar condition, congruent mapping
acc_go_fam_incong Float Recommended Average accuracy on go trials in familiar condition, incongruent mapping
data_file1 File 255 Recommended Data file 1
data_file2 File 255 Recommended data file 2
stage_2_choice Integer Recommended Alien selected 1::4
stage_2_outcome Integer Recommended Reward or no reward after selecting alien 0;1 0= No; 1= Yes
common_left Integer Recommended Whether common transition takes place if left rocket chosen (1=yes, 0=no) 0;1 0= No; 1= Yes
common_right Integer Recommended Whether common transition takes place if right rocket chosen (1=yes, 0=no) 0;1 0= No; 1= Yes
rocket_color_left Integer Recommended Color of left rocket 1 :: 4 1= red; 2= green; 3= purple; 4= blue
rocket_color_right Integer Recommended Color of right rocket 1 :: 4 1= red; 2= green; 3= purple; 4= blue
planet_color_left Integer Recommended Color of left planet 1 :: 4 1= red; 2= green; 3= purple; 4= blue
planet_color_right Integer Recommended Color of right planet 1 :: 4 1= red; 2= green; 3= purple; 4= blue
stage_1_key Integer Recommended Right/Left press to select spaceship 37;39 37= left; 39= right
stage_1_rt Float Recommended Time (milliseconds) to choose rocket
stage_1_choice Integer Recommended Rocket selected given previous choice 0;1 0=right; 1=left
state_2_outcome_prob Float Recommended Probability of receving reward
response Integer Recommended 1 = NonResponse(<30% reduction in HRSD scores and HRSD >15 for 2 consecutive visits and met the DSM-IV criteria for MDD for 2 consecutive visits during weeks 6, 8, 10, and 12) 2 = Partial Response(not meeting criteria for NonResponse or Remission) 3 = Remission(>60% reduction in HRSD scores and HRSD <8 for 2 consecutive visits and does not meet DSM-IV criteria for MDD for 2 consecutive visits during weeks 6, 8, 10, and 12)If the patient meets the criteria for NonResponse the patient will advance to the Randomization Phase (Phase II). If the patient has had a partial response, continue at the maximum tolerated dose of the current medication up to week 12 then advance to the Randomization Phase. If the patient meets the criteria for Remission at week 12, continue on current medications in Phase II with patient visits scheduled only once every 4 weeks.
time_elapsed Float Recommended The number of milliseconds since the start of the experiment until the questionnaire was completed
internal_node_id String 10 Recommended An identifire for task prograss
sub String 4 Recommended Task spesific subject id
view_history Float Recommended Time (milliseconds) spent in each instructions page
rt Float Recommended Reaction Time -1 = NaN
stage_2_key Integer Recommended Right/Left press to select alien 37;39 37= left; 39= right
stage_2_rt Float Recommended Time (milliseconds) to choose alien
completed Integer Recommended Checks if completed 0::3 0=No; 1=Yes; 2=Yes, lost; 3=Unverified
presp Float Recommended The probability of a response on stop trials for a person (mean(signal$presp)): the probability that the participant pressed the button when they got a stop signal.
nthrt Float Recommended Quantile Response Time (RT): the nth percentile of go RT with the percentile value matching the probability of responding (ref: Spunt, R.P., et al. The phenomenology of error processing: The dorsal ACC response to stop-signal errors tracks reports of negative affect. J Cogn Neurosci. 2012;24:1753-1765)
stop_rt Float Recommended Mean reaction time for stop trials
racetest Float Recommended The difference of reaction time between go trials and stop trials: goRT - sRT
Data Structure

This page displays the data structure defined for the measure identified in the title and structure short name. The table below displays a list of data elements in this structure (also called variables) and the following information:

  • Element Name: This is the standard element name
  • Data Type: Which type of data this element is, e.g. String, Float, File location.
  • Size: If applicable, the character limit of this element
  • Required: This column displays whether the element is Required for valid submissions, Recommended for valid submissions, Conditional on other elements, or Optional
  • Description: A basic description
  • Value Range: Which values can appear validly in this element (case sensitive for strings)
  • Notes: Expanded description or notes on coding of values
  • Aliases: A list of currently supported Aliases (alternate element names)
  • For valid elements with shared data, on the far left is a Filter button you can use to view a summary of shared data for that element and apply a query filter to your Cart based on selected value ranges

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