Article Figures & Data
Figures
- Fig. 1.
Schematic of the amygdala complex (top left) with the arrow indicating the position of the CN lesion at the level of the sections shown in the photomicrographs. The photomicrograph of a Nissl-stained section (bottom left) reveals heavy gliosis at the lesion site in the dorsal region of CN. Photomicrographs (center panels) show intact ChAT-immunopositive cholinergic neurons surrounding CN at two magnifications. Similarly, photomicrographs (right panels) show intact parvalbumin-immunopositive GABAergic neurons surrounding CN. ABL, Basolateral nucleus; st, striatum.
- Fig. 2.
Latencies to the first correct response in the behavioral tests. The filled bars show performance of CN-lesioned rats, and the open bars show performance of control (CTL) rats. a, Responding when the target duration was reduced to 0.25 sec and during the immediately preceding baseline session with 0.50 sec targets. b,Responding when distracter stimuli were presented during the trials and during the immediately preceding baseline session.c, Responding in a test session in which the ready signals were of variable duration (V-1, 1 sec;V-5, 5 sec; V-9, 9 sec) and responding in the immediately preceding baseline session in which the ready signal was always 5 sec (C-5).
Tables
Control rats Lesioned rats Latency to first correct response(s) 1.84 ± 0.16 1.82 ± 0.14 Trials with a correct response (%) 88.3 ± 1.1 89.8 ± 1.9 Trials with correct response first (%) 75.6 ± 2.1 74.7 ± 1.9 Latency to first error(s) 3.83 ± 0.09 3.78 ± 0.11 Trials with an error response (%) 88.6 ± 3.8 87.9 ± 7.0 No. of anticipatory responses/trial 2.4 ± 0.3 2.5 ± 0.3 Latency to first anticipatory response(s) 4.12 ± 0.39 4.10 ± 0.39 Values are mean ± SEM.
- Table 2.
Performance in attentional challenge tests: percentage of trials with first response correct
Challenge Control rats Lesioned rats Target duration 0.50 sec 78.5 ± 2.2 80.0 ± 2.4 0.25 sec 77.1 ± 3.2 67.6 ± 1.4 Distracter No distracter 76.1 ± 4.2 74.0 ± 4.1 Distracter 72.4 ± 4.6 66.3 ± 4.8 Ready signal variability Constant, 5 sec 76.0 ± 3.8 74.5 ± 4.2 Variable, 1 sec 50.0 ± 3.5 36.4 ± 3.2 Variable, 5 sec 80.3 ± 4.7 66.9 ± 4.2 Variable, 9 sec 74.5 ± 3.6 57.5 ± 4.1 Values are mean ± SEM.
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