Location of reticular premotor areas of a motor center innervating craniocervical muscles in the mallard (Anas platyrhynchos L.)

Tellegen, Annet J.; Dubbeldam, J.L.

doi:10.1002/(sici)1096-9861(19990315)405:3<281::aid-cne1>3.0.co;2-y

Cited by 9 publications

(6 citation statements)

References 45 publications

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“…The CeA projects densely to the parvocellular reticular formation (Shammah-Lagnado et al, 1992; Swanson and Petrovich, 1998; Van Daele et al, 2011), which comprises both cervical and mandibular premotor populations (Tellegen and Dubbeldam, 1999). We found that this arrangement allows for CeA control over the delivery of lethal biting attacks upon prey.…”

Section: Discussionmentioning

confidence: 99%

Integrated Control of Predatory Hunting by the Central Nucleus of the Amygdala

Han

Téllez

Rangel

et al. 2017

Cell

252

211

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Superior predatory skills led to the evolutionary triumph of jawed vertebrates. However, the mechanisms by which the vertebrate brain controls predation remain largely unknown. Here we reveal a critical role for the central nucleus of the amygdala in predatory hunting. Both optogenetic and chemogenetic stimulation of central amygdala of mice elicited predatory-like attacks upon both insect and artificial prey. Coordinated control of cervical and mandibular musculatures, which is necessary for accurately positioning lethal bites on prey, was mediated by a central amygdala projection to the reticular formation in the brainstem. In contrast, prey pursuit was mediated by projections to the midbrain periaqueductal gray matter. Targeted lesions to these two pathways separately disrupted biting attacks upon prey versus the initiation of prey pursuit. Our findings delineate a neural network that integrates distinct behavioral modules, and suggest that central amygdala neurons instruct predatory hunting across jawed vertebrates.

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Section: Discussionmentioning

confidence: 99%

Integrated Control of Predatory Hunting by the Central Nucleus of the Amygdala

Han

Téllez

Rangel

et al. 2017

Cell

252

211

View full text Add to dashboard Cite

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“…Most species exhibit a wide range of head-neck movements in activities that are influenced or initiated by input from oro-facial structures (Abrahams et al, 1993), indicating that movement of the head is an integral parl of normal oral function. Numerous animal studies, using neurophysiological (Sherrington, 1898; Kerr and Olafson, 1961;Kerr, 1972;Abrahams and Richmond, 1977;Sumino and Nozaki, 1977;Westberg and Olsson, 1991;Alstenrark et al, 1992;Abrahams et al, 1993) as well as neuro-anatomical (Sumino and Nozaki, 1977;Matsushita et al, 1981;Ruggiero et al, 1981;Chang et al, 1988;Tellegen and Dubbeldam, 1994) techniques, have demonstrated connections between the trigeminal and the neck neuromuscular systems. A fuinctional integration between the temporomandibular and the craniocervical regions is suLggested by their intimate anatomical and biomechanical relationships (Thomnpsoni and Brodie, 1942;Brodie, 1950;Kraus, 1988).…”

Section: Introductionmentioning

confidence: 99%

Co-ordinated Mandibular and Head-Neck Movements during Rhythmic Jaw Activities in Man

et al. 2000

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Recent observations in man of concomitant mandibular and head movements during single maximal jaw-opening/-closing tasks suggest a close functional relationship between the mandibular and the head-neck motor systems. This study was aimed at further testing of the hypothesis of a functional integration between the human jaw and neck regions. Spatiotemporal characteristics of mandibular and associated head movements were evaluated for 3 different modes of rhythmic jaw activities: self-paced continuous maximal jaw-opening/-closing movements, paced continuous maximal jaw-opening/-closing movements at 50 cycles/minute, and unilateral chewing. Mandibular and head-neck movements were simultaneously recorded in 12 healthy young adults, by means of a wireless opto-electronic system for 3-D movement recordings, with retro-reflective markers attached to the lower (mandible) and upper (head) incisors. The results showed that rhythmic mandibular movements were paralleled by head movements. An initial change in head position (head extension) was seen at the start of the first jaw-movement cycle, and this adjusted head position was retained during the following cycles. In addition to this prevailing head extension, the maximal jaw-opening/-closing cycles were paralleled by head extension-flexion movements, and in general the start of these head movements preceded the start of the mandibular movements. The results support the idea of a functional relationship between the temporomandibular and the cranio-cervical neuromuscular systems. We therefore suggest a new concept for human jaw function, in which "functional jaw movements" are the result of activation of jaw as well as neck muscles, leading to simultaneous movements in the temporomandibular, atlanto-occipital, and cervical spine joints.

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“…However, mastication not only involves precise sequential opening and closing jaw movements but also complex tongue movements, coordination of lip and cheek movements and, supposedly, associated oscillations of the head to facilitate the intraoral transport of food and swallowing. The latter was long assumed to occur but was not supported by scientific evidence; perhaps the closest findings suggesting an association between jaw and head movements came from studies on the neurophys-iological relationships (Manni et al, 1975;Sumino & Nozaki, 1977;Sartucci, Rossi, & Rossi, 1986;Abrahams et al, 1993;Okayasu et al, 1999) and neuroanatomical interconnections (Matsushita et al, 1981;Sumino, Nozaki & Katoh, 1981;Tellegen & Dubbeldam, 1994) between trigeminal and cervical systems. The existence of this interrelationship has been further documented in human subjects performing various functional tasks, and matters such as the modulation of jaw movements by head posture (Mohl, 1984), the activation of cervical muscles during mastication and swallowing (Davies, 1979;Ishigaki et al, 1998;Bazzotti, 1998) and clenching (Kohno, Yoshida & Kobayashi, 1988;Kohno, Kobayashi & Tsuchida, 1995;Clark et al, 1993), and the influence of jaw position on the neck muscles' electromyographic activity (Sekimoto et al, 1999) have become clear now.…”

Section: Introductionmentioning

confidence: 99%

Functional‐rhythmical coupling of head and mandibular movements

Kohno

Matsuyama

Medina

et al. 2001

J of Oral Rehabilitation

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It is known that small head movements accompany the movements of the jaw during mastication; however, it is unknown whether these movements occur rhythmically and synchronously. The objective of this study was to determine whether there exists a functional coupling between the head and mandibular movements. Four healthy male adults (mean age 25.5) with normal occlusion and without TMD history were selected as subjects. Using the Trimet system, we measured tridimensionally both the movement of the head and the mandible by tracking upper and lower incisal points, respectively, during tapping movements with different opening range and frequency, then analysed the vertical component of these movements. The upper incisal point moved in opposite direction to the mandible in all tapping strokes in all subjects, during opening the head moved in a cranial direction and during closing in a caudal direction; the incidence rate for this concomitant movement was 98%, implying that the head moves periodically and rhythmically, as the mandible does. The cycle time of these coincident movements showed a correlation coefficient of 0.94. Moreover, the vertical range of head movement was within 10% of the jaw's movement. From these results we concluded that, at least during teeth tapping, the head moves in rhythmical coordination with mandibular movement.

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Location of reticular premotor areas of a motor center innervating craniocervical muscles in the mallard (Anas platyrhynchos L.)

Cited by 9 publications

References 45 publications

Integrated Control of Predatory Hunting by the Central Nucleus of the Amygdala

Integrated Control of Predatory Hunting by the Central Nucleus of the Amygdala

Co-ordinated Mandibular and Head-Neck Movements during Rhythmic Jaw Activities in Man

Functional‐rhythmical coupling of head and mandibular movements

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