IMHV lesions caused deficits in conspecific discrimination in chicks but not in adult quail.
An experiment was conducted to investigate whether there is a functional difference in IMHV between chicks and adults using the conditioned individual preference (CIP) method, a modified conditioned place preference paradigm. CIP training of the quail involved 8 days of alternate injections of morphine or saline followed by associations with a stimulus quail in one compartment of the preference box. After the CIP training, the subject quail were given a choice between the morphine-associated and the saline-associated stimulus quail. All adult and chicks with neostriatum lesion showed a preference for the morphine-associated stimulus quail. However, the chicks receiving bilateral IMHV lesions before CIP did not show any preference for either stimulus quail. These results suggest that there is a functional difference in IMHV between chicks and adults.
Awaya
Fuyumi
F
Department of Psychology, Keio University, Mita 2-15-45, Minato-ku, Tokyo 108-0073, Japan.
Watanabe
Shigeru
S
D000375:Aging / Q000523:psychology*; D000818:Animals; D000831:Animals, Newborn / Q000523:psychology*; D001522:Behavior, Animal / Q000502:physiology; D003216:Conditioning, Operant / Q000502:physiology; D003370:Coturnix / Q000502:physiology*; D004193:Discrimination Learning; D004192:Discrimination, Psychological / Q000502:physiology*; D007206:Individuality; D008297:Male; D017072:Neostriatum / Q000033:anatomy & histology / Q000293:injuries*; D013238:Stereotaxic Techniques