Projection of taste nerve afferents to anterior opercular- insular cortex in squirrel monkey (Saimiri sciureus)

Benjamin, Robert M.; Burton, Harold

doi:10.1016/0006-8993(68)90100-5

Cited by 144 publications

(53 citation statements)

References 10 publications

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“…Like the vagus, the chorda tympani activates multiple sites in the cortex of both cat and monkey. In the cat, chorda-tympani-evoked potentials were reported in the orbital gyrus and the coronal gyrus (Burton and Earls 1969) and in the monkey, in the inferior precentral area of the sensorimotor cortex and the opercular/insular cortex (Benjamin and Burton 1968;and Ogawa et al 1985). The orbital/insular area receives input from the thalamic taste area (monkey: Pritchard et al 1986;cat: Ruderman et al 1972;Yasui et al 1987) and is regarded as primary gustatory cortex.…”

Section: Input Sourcementioning

confidence: 99%

“…The orbital/insular area receives input from the thalamic taste area (monkey: Pritchard et al 1986;cat: Ruderman et al 1972;Yasui et al 1987) and is regarded as primary gustatory cortex. In the monkey, a collateral ("sustaining") projection from the thalamic taste relay to the sensorimotor cortical areas was proposed (Benjamin and Burton 1968;see Pritchard et al 1986), although in the cat, taste neurons were not observed in the coronal region (Cohen et al 1950), and instead, anterograde tracing indicated projections from the thalamic taste relay to orbital, perirhinal, and infralimbic cortices (Yasui et al 1987). Thus, the data indicate that the multiple thalamocortical projections of the chorda tympani parallel those of the vagus; however, it remains to be determined whether the vagal and gustatory inputs to the orbital/insular and sensorimotor cortices ascend from common sets of thalamic neurons.…”

Section: Input Sourcementioning

confidence: 99%

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Vagal Input to Lateral Area 3a in Cat Cortex

Ito

Craig

2003

Journal of Neurophysiology

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Penfield's sensory homunculus included visceral organs at its lateral extreme, and vagal input was recently identified lateral to the intraoral representation in primary somatosensory cortex (S1) of rats. We tested whether vagal input is similarly located in cats where area 3b (equivalent to S1) is clearly distinguishable from adjacent regions. Field potentials were recorded from the intact dura over the left hemisphere using electrical stimulation of the left or right cervical vagus nerve in seven cats. A surface positive-negative potential was evoked from either side in the lateral part of the sigmoid gyrus. Finer mapping made at the pial surface with a microelectrode identified a focal site anteromedial to the anterior tip of the coronal sulcus. Depth recordings demonstrated polarity reversals and multi-unit vagal responses, indicating that the potentials were generated by an afferent activation focus in the middle layers of the cortex. The S1 mechanoreceptive representation was localized by mapping multi-unit somatosensory receptive fields in the middle cortical layers near the coronal sulcus. The vagal-evoked potential site was distinctly anterior to the intraoral S1 representation and adjacent to the masseteric-nerve-evoked potential focus. Lesions made at the focal site revealed that this site is cytoarchitectonically located in area 3a not area 3b. Thus vagal input to the sensorimotor cortex in cats resembles deep rather than cutaneous somatic input, similar to the localization of nociceptive-specific input to area 3a in monkeys. The possibilities are considered that this vagal input is involved in motor control and in the sensory experience of visceral afferent activity.

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Section: Input Sourcementioning

confidence: 99%

Section: Input Sourcementioning

confidence: 99%

Vagal Input to Lateral Area 3a in Cat Cortex

Ito

Craig

2003

Journal of Neurophysiology

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“…The anterior insula /frontal operculum represents a primary gustatory area (PGA) (Pribram and Bagshaw, 1954;Benjamin and Burton, 1968;Scott et al, 1986a,b;Yaxley et al, 1990;Hirsch et al, 1994;Cerf et al, 1996;Petrides et al, 1996), and the caudolateral orbitofrontal cortex (CLOF) represents a secondary gustatory area (SGA) (Rolls et al, 1989Baylis and Gaffan, 1991;Rolls and Baylis, 1994;Baylis et al, 1995;Small et al, 1996). Single-cell recording studies indicate that the PGA is not involved in hedonic analysis (Rolls et al, 1988;Rolls, 1993).…”

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confidence: 99%

A Role for the Right Anterior Temporal Lobe in Taste Quality Recognition

et al. 1997

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We conducted two experiments to examine central processing of the taste of citric acid. In the first experiment, elevated citric acid recognition thresholds, but normal detection thresholds, were observed in a group of patients who had undergone a right anterior temporal lobectomy for the treatment of epilepsy, compared with a control group and a group of patients who had undergone the same operation in the left hemisphere. In the second study, using positron emission tomography, we compared regional cerebral blood flow (rCBF) in a condition in which citric acid was presented with one in which water was presented (with similar somatosensory stimulation across both conditions). We observed increased rCBF bilaterally in the caudolateral orbitofrontal cortex, in the right anteromedial temporal lobe, and in the right caudomedial orbitofrontal cortex. The elevated recognition thresholds exhibited in patients with resection of the right anteromedial temporal lobe may be accounted for by damage in an area corresponding to that of the rCBF increase. These results suggest that although taste sensation may be computed in the primary taste cortex, recognition requires further processing by structures located in the anteromedial temporal lobe. Furthermore, they point to preferential processing of this higher-order gustatory function by the right cerebral hemisphere.

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“…Over 35 years ago, Benjamin and co-workers proposed that two cortical regions are involved in taste: a portion of primary somatosensory cortex, S1, and a nearby gustatory area in cortex of the ventral tip of the lateral sulcus (Benjamin & Burton 1968;. The apparent involvement of S1 indicates that at some levels, the processing of touch and taste on the tongue is closely intertwined.…”

Section: Introductionmentioning

confidence: 99%

“…Most importantly, and Benjamin & Burton (1968) used electrical stimulation of nerves of the tongue to activate two regions of cortex in squirrel monkeys, one judged to be the tongue representation of primary somatosensory cortex in its most laterorostral extension into frontal cortex on the lateral surface of the brain, and the other nearby in the opercular-insular cortex close to the end of the lateral fissure. Both regions were thought to receive inputs from the taste nucleus of the thalamus, VPMpc, as a large cortical lesion involving both areas produced retrograde degeneration in VPMpc (Benjamin & Burton 1968). Pritchard et al (1986) provided further evidence for these connections in macaque monkeys when injections of tracers into VPMpc labelled both regions of cortex, but 'area G' was much more densely labelled than S1.…”

Section: Defining the Cortical Network For Tastementioning

confidence: 99%

The future of mapping sensory cortex in primates: three of many remaining issues

Kaas

2005

Phil. Trans. R. Soc. B

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After 100 years of progress in understanding the organization of cerebral cortex, three issues have persisted over the last 35 years, which are revisited in this paper. First, is V3 an established or questionable area of visual cortex? Second, does taste cortex include part of area 3b (S1 proper) and other somatosensory areas? Third, is primary auditory cortex, A1, of primates the homologue of A1 in cats? The existence of such questions about even the early stages of cortical processing reflects the difficulties in mapping cerebral cortex, and reminds us that the era of basic discovery is far from over.

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Projection of taste nerve afferents to anterior opercular- insular cortex in squirrel monkey (Saimiri sciureus)

Cited by 144 publications

References 10 publications

Vagal Input to Lateral Area 3a in Cat Cortex

Vagal Input to Lateral Area 3a in Cat Cortex

A Role for the Right Anterior Temporal Lobe in Taste Quality Recognition

The future of mapping sensory cortex in primates: three of many remaining issues

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