Table 1.

Performance of control (CON) and operated (PFCxIT) monkeys in constant negative

SetAcquisition (errors to criterion)
Pre-opInter-opPost-op
1234567
CON
    CON1234235173184196217193
    CON2268313160219195267208
    CON3300261181141126233199
    CON4326302341168123160126
Mean282.0277.8213.8178.0160.0219.3181.5
PFCxIT
    OP1274217240299630260211
    OP2197186207190541209189
    OP3438304343397738338359
Mean303.0235.7263.3295.3636.3269.0253.0
Retention sets 1–3 (mean percent correct)
Pre-opInter-opPost-opFinal
CON
    CON186.784.390.383.7
    CON287.782.389.783.7
    CON389.385.787.380.7
    CON479.775.386.388.3
Mean85.881.988.484.1
PFCxIT
    OP191.383.067.068.3
    OP290.086.761.066.7
    OP380.377.752.358.0
Mean87.282.460.164.3
  • Top panel, Acquisition data (errors to criterion) from the three phases of the experiment, pre-op, inter-op and post-op. Bottom panel, Retention (mean percent correct) of all preoperatively learned problems was measured immediately before surgery (Pre-op), between unilateral surgeries (Inter-op), immediately after final surgery to complete the disconnection (Post-op), and finally after completion of the post-op acquisition phase.