GreatrexHawkins_RhythmicVariance

This dataset contains experimental data recorded as part of three experiments reported in a paper entitled "Rhythmic variance influences speed, but not accuracy, of complex averaging decisions". All three experiments comprised activities undertaken by David Greatrex as part of a PhD conducted at the University of Cambridge between 2013-2018.

GreatrexHawkins22_Expt.1a.csv & GreatrexHawkins22_Expt.1b.csv:

Both datasets contain the same schema; namely:
subNo: subject ID
index: within subject index referring to randomisation of trials
block: experimental block
mean: mean Interaural Level Difference (ILD) of the noise burst sequence
periodicity: 1 = periodic, 0 = aperiodic
testLevel: ILD of the probe tone
pressedKey: response key pressed by participant on a numeric key pad
answer: 1 = right; -1 = left
isCorrect: correct response = 1; incorrect response = 0
rt = response time
s1 - s6: ILD assigned to each of the six noise bursts in a given trial sequence
t1 - t5: Inter Onset Interval (seconds) between each of the six noise bursts
seqDuration: total duration of the noise burst sequence (seconds)
startInterval: interval between start of a trial and onset of the noise burst sequence (seconds)
trialDuration: recorded duration between start of trial and onset of the probe tone (seconds)

GreatrexHawkins22_Expt.2.csv:
subNo: subject ID
index: within subject index referring to randomisation of trials
block: experimental block
level: ILD distribution displacement (+- 4, +-2, +- 1, 0)
mean: ILD distribution displacement (ILD, level multiplied by participant specific k)
periodicity: 1 = periodic, 0 = aperiodic
nEvents: number of noise bursts onset prior to participant response
pressedKey: response key pressed by participant on a numeric key pad
answer: 1 = right; -1 = left
isCorrect: correct response = 1; incorrect response = 0
rt: response time (seconds)
s1 - s20: ILD assigned to each of the possible 20 noise bursts in a given trial sequence
t1 - t19: Inter Onset Interval (seconds) between each of the possible 20 noise bursts
seqDuration: total duration of the programmed noise burst sequence (seconds)
startInterval: interval between start of a trial and onset of the noise burst sequence (seconds)
trialDuration: recorded duration between start of trial and a participant response (seconds)

Data for all three experiments was gathered using a Macbook pro computer running MATLAB scripts written using the psychtoolbox library.
Responses were collected using a numerical key pad on an external keyboard.