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. Author manuscript; available in PMC: 2006 Nov 7.
Published in final edited form as: Neuroimage. 2005 Nov 2;29(4):1185–1191. doi: 10.1016/j.neuroimage.2005.09.030

Table 1.

Parametric manipulation of task parameters

Target difference from non-target ITI (ms) # Stims/24 s
Stimulus presentation rate
Slower 40% of octave 2000 12
Moderatea 40% of octave 1000 24
Fast 40% of octave  600 40
Target discriminability
Easya 40% of octave 1000 24
Moderate 28% of octave 1000 24
Difficult 16% of octave 1000 24
Short-term memory load
Easya 40% of octave 1000 24
Moderate 40% of octave 4000 24
Difficult 40% of octave 4000 24
a

Common difficulty level across factors.