INVESTIGADORES
MINDLIN Bernardo Gabriel
artículos
Título:
Interaction between telencephalic signals and respiratory dynamics in songbirds
Autor/es:
MENDEZ JM; MINDLIN GB; GOLLER F
Revista:
JOURNAL OF NEUROPHYSIOLOGY
Editorial:
AMER PHYSIOLOGICAL SOC
Referencias:
Lugar: Bethesda; Año: 2012 vol. 107 p. 2971 - 2983
ISSN:
0022-3077
Resumen:
nteraction between telencephalic
signals and respiratory dynamics in songbirds. J Neurophysiol 107: 000?
000, 2012. First published March 7, 2012; doi:10.1152/jn.00646.2011.?The
mechanisms by which telencephalic areas affect motor activities are
largely unknown. They could either take over motor control from
downstream motor circuits or interact with the intrinsic dynamics of
these circuits. Both models have been proposed for telencephalic
control of respiration during learned vocal behavior in birds. The
interactive model postulates that simple signals from the telencephalic
song control areas are sufficient to drive the nonlinear respiratory
network into producing complex temporal sequences. We tested this
basic assumption by electrically stimulating telencephalic song con-
trol areas and analyzing the resulting respiratory patterns in zebra
finches and in canaries. We found strong evidence for interaction
between the rhythm of stimulation and the intrinsic respiratory
rhythm, including naturally emerging subharmonic behavior and in-
tegration of lateralized telencephalic input. The evidence for clear
interaction in our experimental paradigm suggests that telencephalic
vocal control also uses a similar mechanism. Furthermore, species
differences in the response of the respiratory system to stimulation
show parallels to differences in the respiratory patterns of song,
suggesting that the interactive production of respiratory rhythms is
manifested in species-specific specialization of the involved circuitry.