Johnson SM, Wiegel LM, Majewski DM. Are pacemaker properties required for respiratory rhythm generation in adult turtle brainstems in vitro? Am J Physiol Regul Integr Comp Physiol 293: R901-R910, 2007.

Blake AJ, Pearce TM, Rao NS, Johnson SM, Williams JC. Multilayer PDMS microfluidic chamber for controlling slice microenvironment. Lab on a Chip 7: 842-849, 2007.

Sladky KK, Miletic V, Paul-Murphy J, Kinney M, Dallwig R, Johnson SM. Analgesic efficacy and respiratory effects of butorphanol and morphine in turtles (Trachemys scripta). J Am Vet Med Assoc 230: 1356-1362, 2007

Lovett-Barr MR, Mitchell GS, Satriotomo I, Johnson SM. Serotonin-induced in vitro long-term facilitation exhibits differential pattern sensitivity in cervical and thoracic inspiratory motor output. Neuroscience 142(3):885-92,2006 Oct 27. [Abstract]

Johnson SM, Creighton RJ. Spinal cord injury-induced changes in breathing are not due to supraspinal plasticity in turtles (Pseudemys). Am J Physiol Regul Integr Comp Physiol 289: R1550-R1561, 2005. [Abstract]

Wilkerson JER, Wenninger MR, Mitchell GS, Johnson SM. Time-dependent changes in spontaneous respiratory activity in turtle brainstems in vitro. Respir Physiol Neurobiol 138: 253-263, 2003. [Full Text]

Fuller DD, Johnson SM, Olson EB, Mitchell GS. Synaptic pathways to phrenic motoneurons are enhanced by chronic intermittent hypoxia following cervical spinal cord injury. J Neurosci 23: 2993-3000, 2003. [Abstract]

Mitchell GS, Johnson SM. Invited Review: Neuroplasticity in respiratory motor control. J Appl Physiol 94: 358-374, 2003. [Abstract]

Johnson SM, Wilkerson JER, Wenninger MR, Henderson DR, Mitchell GS. Role of synaptic inhibition in turtle respiratory rhythm generation. J Physiol (Lond) 544: 253-265, 2002. [Abstract]

Johnson SM, Mitchell GS. Activity-dependent plasticity in descending synaptic inputs to respiratory spinal motoneurons. Respir Physiol Neurobio 131: 79-90, 2002. [Abstract]

Fuller DD, Johnson SM, Johnson RA, Mitchell GS. Chronic spinal sensory denervation via cervical dorsal rhizotomy enhances evoked crossed synaptic inputs to phrenic motoneurons. Neurosci Lett 323: 25-28, 2002. [Full Text]

Johnson SM, Wilkerson JER, Henderson DR, Wenninger MR, Mitchell GS. Serotonin elicits long-lasting enhancement of rhythmic respiratory activity in turtle brainstems in vitro. J Appl Physiol 91: 2703-2712, 2001. [Abstract]

Johnson SM, Mitchell GS. Activity-dependent plasticity of descending synaptic inputs to spinal respiratory motoneurons in an in vitro turtle brainstem-spinal cord preparation. J Neurosci 20: 3487-3495, 2000. [Abstract]

Johnson SM, Mitchell GS. NMDA-mediated bulbospinal respiratory drive is pH/PCO 2 -insensitive in turtle brainstem-spinal cord. Respir Physiol 113: 201-212, 1998. [Full Text]

Johnson RA, Johnson SM, Mitchell GS. Catecholaminergic modulation of respiratory rhythm in an in vitro turtle brainstem preparation. J Appl Physiol 85: 105-114, 1998. [Abstract]

Johnson SM, Johnson RA, Mitchell GS. Hypoxia, temperature and pH/CO 2 effects on respiratory discharge from a turtle brainstem preparation. J Appl Physiol 84: 649-660, 1998. [Abstract]