Role of the Pontine Reticular Formation in the Neural Organization of Deglutition

Neuronal Activity Patterns in Primate Primary Motor Cortex Related to Trained or Semiautomatic Jaw and Tongue Movements

“…Our recent studies have also shown that reversible inactivation by cooling of the lateral pericentral cortex reduces the incidence of chewing and swallowing after chewing, and alters swallow-and chewing-related electromyographic (EMG) patterns in awake monkeys (Narita et al 1999(Narita et al , 2002. This is consistent with earlier studies by Sumi (1972) showing that reversible inactivation or unilateral or bilateral ablation of the anterolateral frontal cortex may suppress chewing and swallowing elicited by electrical stimulation of the pons in anesthetized rabbits. Recent brain imaging studies in humans have demonstrated swallow-related bilateral activation within Brodmann's areas 3, 4, and 6, and several other cortical areas (Hamdy et al 1999;Martin et al 2001).…”

Neuronal Activity Patterns in Primate Primary Motor Cortex Related to Trained or Semiautomatic Jaw and Tongue Movements

“…Our recent studies have also shown that reversible inactivation by cooling of the lateral pericentral cortex reduces the incidence of chewing and swallowing after chewing, and alters swallow-and chewing-related electromyographic (EMG) patterns in awake monkeys (Narita et al 1999(Narita et al , 2002. This is consistent with earlier studies by Sumi (1972) showing that reversible inactivation or unilateral or bilateral ablation of the anterolateral frontal cortex may suppress chewing and swallowing elicited by electrical stimulation of the pons in anesthetized rabbits. Recent brain imaging studies in humans have demonstrated swallow-related bilateral activation within Brodmann's areas 3, 4, and 6, and several other cortical areas (Hamdy et al 1999;Martin et al 2001).…”

Modification of Cortically Evoked Rhythmic Chewing and Swallowing From Midbrain and Pons

“…An ipsilateral pathway, however, may also exist. Such an ascending reticulo-cortical connection is, in addition, evidenced by a recent study on the response of single cortical neurons to stimulation of the brain stem reticular formation (SUMI, 1970c), by some previous histological examinations (BRODAL, 1958;BRODAL and Rossi, 1955), and by the fact that elicitation of rhythmic chewing and swallowing by pontine stimulation is enhanced when the frontal Fig. 10.…”

Neurophysiology of Speech and Swallowing

“…Moreover, by making a hemisection of the brain at the caudal edge of the pons, Doty demonstrated that the basic pattern of swallowing remained intact, even though the phasic activity of a given muscle, such as the mylohyoid, was eliminated. It also has been demonstrated that swallowing elicited by pontine stimulation, may be eliminated by section of the brainstem at the pontomedullary border (Sumi, 1972). These experiments demonstrated that the swallowing CPG most likely lies within the medullary reticular formation.…”

Neuronal Activity Patterns in Primate Primary Motor Cortex Related to Trained or Semiautomatic Jaw and Tongue Movements

“…Our recent studies have also shown that reversible inactivation by cooling of the lateral pericentral cortex reduces the incidence of chewing and swallowing after chewing, and alters swallow-and chewing-related electromyographic (EMG) patterns in awake monkeys (Narita et al 1999(Narita et al , 2002. This is consistent with earlier studies by Sumi (1972) showing that reversible inactivation or unilateral or bilateral ablation of the anterolateral frontal cortex may suppress chewing and swallowing elicited by electrical stimulation of the pons in anesthetized rabbits. Recent brain imaging studies in humans have demonstrated swallow-related bilateral activation within Brodmann's areas 3, 4, and 6, and several other cortical areas (Hamdy et al 1999;Martin et al 2001).…”

Modification of Cortically Evoked Rhythmic Chewing and Swallowing From Midbrain and Pons

“…An ipsilateral pathway, however, may also exist. Such an ascending reticulo-cortical connection is, in addition, evidenced by a recent study on the response of single cortical neurons to stimulation of the brain stem reticular formation (SUMI, 1970c), by some previous histological examinations (BRODAL, 1958;BRODAL and Rossi, 1955), and by the fact that elicitation of rhythmic chewing and swallowing by pontine stimulation is enhanced when the frontal Fig. 10.…”

Neurophysiology of Speech and Swallowing

“…Moreover, by making a hemisection of the brain at the caudal edge of the pons, Doty demonstrated that the basic pattern of swallowing remained intact, even though the phasic activity of a given muscle, such as the mylohyoid, was eliminated. It also has been demonstrated that swallowing elicited by pontine stimulation, may be eliminated by section of the brainstem at the pontomedullary border (Sumi, 1972). These experiments demonstrated that the swallowing CPG most likely lies within the medullary reticular formation.…”

Neuronal Activity Patterns in Primate Primary Motor Cortex Related to Trained or Semiautomatic Jaw and Tongue Movements

“…Our recent studies have also shown that reversible inactivation by cooling of the lateral pericentral cortex reduces the incidence of chewing and swallowing after chewing, and alters swallow-and chewing-related electromyographic (EMG) patterns in awake monkeys (Narita et al 1999(Narita et al , 2002. This is consistent with earlier studies by Sumi (1972) showing that reversible inactivation or unilateral or bilateral ablation of the anterolateral frontal cortex may suppress chewing and swallowing elicited by electrical stimulation of the pons in anesthetized rabbits. Recent brain imaging studies in humans have demonstrated swallow-related bilateral activation within Brodmann's areas 3, 4, and 6, and several other cortical areas (Hamdy et al 1999;Martin et al 2001).…”

Modification of Cortically Evoked Rhythmic Chewing and Swallowing From Midbrain and Pons

“…An ipsilateral pathway, however, may also exist. Such an ascending reticulo-cortical connection is, in addition, evidenced by a recent study on the response of single cortical neurons to stimulation of the brain stem reticular formation (SUMI, 1970c), by some previous histological examinations (BRODAL, 1958;BRODAL and Rossi, 1955), and by the fact that elicitation of rhythmic chewing and swallowing by pontine stimulation is enhanced when the frontal Fig. 10.…”

Neurophysiology of Speech and Swallowing

“…Moreover, by making a hemisection of the brain at the caudal edge of the pons, Doty demonstrated that the basic pattern of swallowing remained intact, even though the phasic activity of a given muscle, such as the mylohyoid, was eliminated. It also has been demonstrated that swallowing elicited by pontine stimulation, may be eliminated by section of the brainstem at the pontomedullary border (Sumi, 1972). These experiments demonstrated that the swallowing CPG most likely lies within the medullary reticular formation.…”