Data/hora: 07/06/2024 06:35:29

Provedor de dados: | 56
País: | Brazil
Título: | Evidence of hemispheric specialization in marmosets (Callithrix penicillata) using tympanic membrane thermometry
Autores: | Tomaz,C.; Verburg,M.S.; Boere,V.; Pianta,T.F.; Belo,M.
Data: | 2003-07-01
Ano: | 2003
Palavras-chave: | Laterality; Tympanic temperature; Stress; New World monkey.
Resumo: | Recent studies have employed tympanic thermometry to assess lateralization of cognitive and emotional functions in primates. However, no studies using this technique have investigated the possibility of hemispheric specialization in New World monkeys. Therefore, the aim of the present study was to investigate tympanic membrane (TM) temperature asymmetries and their possible correlation with stress responses in marmosets (Callithrix penicillata). Infrared TM thermometry was completed bilaterally in 24 animals (14 males and 10 females) during a stressful situation of capture and restraint. There were no significant differences between gender. A significant negative correlation was observed between TM temperature of the right ear and the number of captures (r = -0.633; P&lt;0.001). Subjects with a more frequent previous history of captures (5 to 9 captures; N = 11) showed lower TM temperature when compared to those with fewer previous captures (1 to 4 captures; N = 13). No differences were observed for the left TM temperature. These results suggest that under intense emotional challenge (capture and restraint) there is a stronger activation of the neural structures situated in the right brain hemisphere. Taken together, the data reveal for the first time evidence of hemispheric specialization in emotional physiological processing in a New World monkey.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000700012
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X2003000700012
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.36 n.7 2003
Fonte: | info:eu-repo/semantics/openAccess