Table 3. For each Task and Volume of Tissue Dysfunciton, Decriptive Statistics and p-value for each group.

Task/Volume of Tissue Dysfunction	N	Range	Q1	Q2	Q3	No-Error	Reversible-Only	NonReversible-Reversible
NonReversible Comprehension
No-Error	14	0	0	0	0	—	1	< 0.001*
Reversible-Only	14	0	0	0	0	—	—	< 0.001*
NonReversible-Reversible	10	17-83	33	33	46	—	—	—
Reversible Comprehension
No-Error	—	0	0	0	0	—	< 0.001*	< 0.001*
Reversible-Only	—	25-75	25	25	50	—	—	0.07
NonReversible-Reversible	—	25-100	50	50	50	—	—	—
Picture-Word Verification
No-Error	—	0-12	0	0	5	—	0.003*	<.001*
Reversible-Only	—	0-47	8	18	41	—	—	0.007*
NonReversible-Reversible	—	6-100	41	65	99	—	—	—
Picture Naming
No-Error	—	0-100	0	6	14	—	0.03	<0.00l*
Reversible-Only	—	0-100	10	41	99	—	—	0.19
NonReversible-Reversible	—	24-100	78	87	99	—	—	—
Infarct Volume
No-Error	—	0-60	0.3	3	7	—	0.04	0.002*
Reversible-Only	—	0-27	4	14	17	—	—	0.001*
NonReversible-Reversible	—	0.75-129	29	38	44	—	—	—
Hypoperfusion Volume
No-Error	—	0-13	0	0	0	—	0.02	0.008*
Reversible-Only	—	0-53	0	2	29	—	—	0.13
NonReversible-Reversible	—	0-122	4	36	68	—	—	—

Note. No-Error = no error on NonReversible or Reversible questions, Reversibe-Only = Errors only on Reversible questions, NonReversible-Reversible = Errors on both Nonreversible and Reversible questions. The number of subjects in each group was constant across tasks. Volume of lesion was measure in cubic centimeters. After correcting for multiple comparisons, results were considred significant (indicated by asterisk), if p <= 0.02.