Practice Problem

Effect of LMAN lesion on behavioral change after deafening

This experiment tested whether lesions of a basal ganglia output nucleus (the lateral portion of the magnocellular nucleus of the anterior nidopallium (LMAN)) alters the behavioral consequence of adult deafening in songbirds. There were 2 treatment groups. The experimental group received a bilateral lesion of the LMAN at the time of deafening. The control group (unlesioned) was subjected to bilateral sham surgery at the time of deafening. For all animals, songs were recorded 7 days before deafening, 1 hour before deafening, and at 5 times (7, 14, 21, 28, 35 days) after deafening. Recordings taken 1 hour before deafening were used as a template for judging the similarity to song recorded at other times. Overall similarity scores are presented below.

Unlesioned

Animal ID

Predeaf

Deaf7

Deaf14

Deaf21

Deaf28

Deaf35

% lMAN remaining

o82b(y82)

92.63

85.01

80.61

61.14

56.52

45.70

100%

o88b(y88)

95.59

94.17

87.41

83.61

72.59

65.17

100%

o100b(y100)

92.28

92.69

93.32

87.74

79.69

66.24

100%

dg11b

90.32

91.61

92.78

90.90

85.89

80.64

100%

dg15b

96.36

90.83

87.80

82.06

75.79

61.90

100%

Lesioned

Animal ID

Predeaf

Deaf7

Deaf14

Deaf21

Deaf28

Deaf35

% lMAN remaining

db57b

96.22

95.25

96.99

97.68

95.86

99.25

0%

db59b

95.14

93.82

94.11

92.60

93.44

92.42

5%

o37b(y37)

91.02

92.95

91.05

90.14

91.96

91.15

5%

o38b(y38)

96.37

94.04

84.01

86.59

90.72

89.38

15%

o96b(y93)

93.73

93.17

92.31

89.55

90.66

88.14

15%

dg10b

94.64

94.00

92.35

94.00

93.64

92.00

5%

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StatsWiki: nsc203practice4 (last edited 2012-01-20 22:03:13 by cpe-69-207-83-233)

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