DISCRIMINATORY APPROACH TO AUDITORY STIMULI IN GUINEA FOWL (NUMIDA MELEAGRIS) AFTER HYPERSTRIATAL∕HIPPOCAMP- AL BRAIN DAMAGE



TABLE I

Table I (A) shows the mean values (s) for latencies to approach and leave on pre- and postoperative training and test regimes after a
‘train-trill’ for birds with anterior (Al) and posterior lesions (Pl) and sham controls (C). Table I (B) shows the mean changes (with SD)

between regimes

(A) Approach∕leave, mean latencies (s)

Regime: Preoperative                                          Postoperative

‘Train’                    ‘Test’                      ‘Train’                      ‘Test’

Group    Approach    Leave     Approach    Leave     Approach    Leave     Approach    Leave

Al         2.5           q7         2.62

j? ≡i,            S

36.41

39.82

3.2

3.39

44.4

51.62

2.82

3.01

40.1

49.61

c          38           40.52      261

44.45

2.7

40.86

2.74

43.52

(B) Approach∕leave, change of latency (s)

Regime:

Group

Approach

Leave

Pre- to postoperative

Pre- to postoperative

‘Train’

‘Test’

‘Train

‘Test’

Al

+ 0.69a

+ 0.39

+ 6.88

+ 3.65

± 0.9

± 0.7

± 7.1

± 4.8

Pl

+ 0.82a

+ 0.27

+ 9.73c

+ 9.6

± 0.6

± 0.2

± 11.8

+ 6.2

C

- 0.79b

+ 0.13

+ 0.34d

- 0.93

± 0.8

+ 0.1

+ 3.7

± 1.8

a>b,P< 0.01; c > d,P< 0.05.



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