Retinotopic organization within the lateral posterior complex of the cat

Hutchins, Bob; Updyke, B. V.

doi:10.1002/cne.902850306

Cited by 62 publications

(69 citation statements)

References 69 publications

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“…6). Although the number of our recording sites in LP1-c is limited (10 in 11 cats), the proposed division perfectly matches the diverse morphology and connectivity of these subregions (Berson and Graybiel, 1978;Updyke, 1983;Abramson and Chalupa, 1988;Garey et al, 1991;Kelly et al, 2003;Huppe-Gourgues et al, 2006) and differences of their neuronal responses in anesthetized cats (Casanova et al, 1989;Chalupa and Abramson, 1989;Hutchins and Updyke, 1989;Dumbrava et al, 2001). There is, however, a discrepancy between our data and those of others with regard to the extent of the dorsolateral region bordering on the pulvinar.…”

Section: Lp-p Recording Sitessupporting

confidence: 69%

“…In two animals, every third section was stained to reveal acetylcholinesterase activity to better distinguish the three major zones in LP-P (Berson and Graybiel, 1983). The physiologically estimated retinotopic positions corresponding to recording sites were finally verified from postmortem anatomical analysis with reference to the maps provided by Hutchins and Updyke (1989) for LP-P and Tusa et al (1981) for visual cortical areas. The retinotopy of the MSS recording sites was not confirmed physiologically, and we therefore relied only on the histology matched to the maps defined by others (Tusa et al, 1981;Grant and Shipp, 1991).…”

Section: Methodsmentioning

confidence: 99%

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Two Streams of Attention-Dependent β Activity in the Striate Recipient Zone of Cat's Lateral Posterior–Pulvinar Complex

Wróbel

Ghazaryan²,

Bekisz³

et al. 2007

J. Neurosci.

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Local field potentials from different visual cortical areas and subdivisions of the cat's lateral posterior-pulvinar complex of the thalamus (LP-P) were recorded during a behavioral task based on delayed spatial discrimination of visual or auditory stimuli. During visual but not auditory attentive tasks, we observed an increase of ␤ activity (12-25 Hz) as calculated from signals recorded from the caudal part of the lateral zone of the LP-P (LPl-c) as well as from cortical areas 17 and 18 and the complex located at the middle suprasylvian sulcus (MSS). This ␤ activity appeared only in the trials that ended with a successful response, proving its relationship to the mechanism of visual attention. In contrast, no enhanced ␤ activity was observed in the rostral part of the lateral zone of the LP-P and in the pulvinar proper. Two subregions of LPl-c (ventromedial and dorsolateral) were distinguished by visually related, attentional ␤ activity of low (12-18 Hz) and high (18 -25 Hz) frequencies, respectively. At the same time, area 17 exhibited attentional activation in the whole ␤ range, and an increase of power in low-frequency ␤ was observed in the medial bank of MSS, whereas cortical area 18 and the lateral bank of the MSS were activated in the high ␤ range. Phase-correlation analysis revealed that two distinct corticothalamic systems were synchronized by the ␤ activity of different frequencies. One comprised of cortical area 17, ventromedial region of LPl-c, and medial MSS, the second involved area 18 and the dorsolateral LPl-c. Our observations suggest that LPl-c belongs to the wide corticothalamic attentional system, which is functionally segregated by distinct streams of ␤ activity.

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Section: Lp-p Recording Sitessupporting

confidence: 69%

Section: Methodsmentioning

confidence: 99%

Two Streams of Attention-Dependent β Activity in the Striate Recipient Zone of Cat's Lateral Posterior–Pulvinar Complex

Wróbel

Ghazaryan²,

Bekisz³

et al. 2007

J. Neurosci.

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“…Electrophysiological recording studies have also found that neurons in SG and LP have similar properties. Both have large receptive fields and respond very reliably to fast moving visual stimuli (Hicks et al, 1984;Hutchins and Updyke, 1989;Casanova and Molotchnikoff, 1990). Furthermore, the present data show that the dorsal SG provides projections to the PR and the L, as does the adjacent LP.…”

Section: Direct and Indirect Visual Thalamo-amygdala Connectivitysupporting

confidence: 64%

Visual Pathways Involved in Fear Conditioning Measured with Fear-Potentiated Startle: Behavioral and Anatomic Studies

2001

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Visual pathways to the amygdala, a brain structure critical for classical fear conditioning, were investigated. Conditioned fear was measured in rats as increased acoustic startle amplitude in the presence versus absence of a light or an odor paired previously with foot shock (fear-potentiated startle). Posttraining lesions of both the lateral geniculate body (LG) and lateral posterior nucleus (LP) of the thalamus together, but not lesions of LG or LP alone, completely blocked the expression of fear-potentiated startle to a visual conditioned stimulus (CS) but not to an olfactory CS. These lesions also did not block contextual fear conditioning using startle or freezing as measures. Local infusion of 1,2,3,4-tetrahydro-6-nitro-2,3-dioxo-benzo[f] quinoxaline-7-sulfonamide disodium, an AMPA antagonist, into the visual thalamus immediately before testing also blocked fear-potentiated startle to a visual CS, suggesting that the lesion effects were not attributable to damage of fibers of passage. Iontophoretic injections into the LP of the anterograde tracer biotinylated dextran amine resulted in heavy anterograde labeling in two amygdala-fugal cortical areas: area TE2 and dorsal perirhinal cortex (PR), and moderate labeling in the lateral amygdaloid nucleus (L). These results suggest that, during classical fear conditioning, a visual stimulus can be transmitted to the amygdala via either lemniscal (i.e., LG 3 V1, V2 3 TE2/PR) or non-lemniscal (i.e., LP 3 V2, TE2/PR) thalamocortico-amygdala pathways, or direct thalamo-amygdala (i.e., LP 3 L) projections.

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“…In addition, we suggest that the caudal pole of PoM in cats may be akin to anterior portions of the suprageniculate nucleus of monkeys: both occupy a similar location, are major targets for ascending spinothalamic and spinal trigeminal inputs (Poggio and Mountcastle, 1960;Berkley, 1983;Burton and Craig, 1983;Ralston and Ralston, 1992), and project to the granular insular cortex and adjacent somatosensory fields (Burton and Kopf, 1984;Mufson and Mesulam, 1984;present results). In contrast, the nucleus usually referred to as Sg in cats is continuous with the lateral posterior complex (Graybiel and Berson, 1980;Bowman and Olson, 1988;Rodrigo-Angulo and Reinoso-Suá rez, 1995) and the dorsal division of the medial geniculate (Winer, 1992), and is basically involved in auditory and visual processing (Calford, 1983;Hicks et al, 1984;Norita and Katoh, 1987;Hutchins and Updyke, 1989). Thalamic connectivity, therefore, argues for a basic similarity between areas DI and GI of cats and the dysgranular and granular insular fields of macaques.…”

Section: The ''Insular'' Areas: Comparative Considerationsmentioning

confidence: 78%

“…Studies have shown that both LM and Sg receive ascending inputs from the pretectal nuclei and deep strata of the superior colliculi (Graybiel and Berson, 1980;Reinoso-Suá rez, 1982, 1995;Norita and Katoh, 1987), and contain visually responsive neurons that display large receptive fields with a rough retinotopic arrangement (Hicks et al, 1984;Hutchins and Updyke, 1989). In addition to visual input, Sg receives input from brainstem auditory nuclei.…”

Section: Thalamic Connections: Organization and Functional Implicationsmentioning

confidence: 98%

Insular cortex and neighboring fields in the cat: A redefinition based on cortical microarchitecture and connections with the thalamus

1997

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The insular areas of the cerebral cortex in carnivores remain vaguely defined and fragmentarily characterized. We have examined the cortical microarchitecture and thalamic connections of the insular region in cats, as a part of a broader study aimed to clarify their subdivisions, functional affiliations, and eventual similarities with other mammals. We report that cortical areas, which resemble the insular fields of other mammals, are located in the cat's orbital gyrus and anterior rhinal sulcus. Our data suggest four such areas: (a) a "ventral agranular insular area" in the lower bank of the anterior rhinal sulcus, architectonically transitional between iso- and allocortex and sparsely connected to the thalamus, mainly with midline nuclei; (b) a "dorsal agranular insular area" in the upper bank of the anterior rhinal sulcus, linked to the mediodorsal, ventromedial, parafascicular and midline nuclei; (c) a "dysgranular insular area" in the anteroventral half of the orbital gyrus, characterized by its connections with gustatory and viscerosensory portions of the ventroposterior complex and with the ventrolateral nucleus; and (d) a "granular insular area", dorsocaudal in the orbital gyrus, which is chiefly bound to spinothalamic-recipient thalamic nuclei such as the posterior medial and the ventroposterior inferior. Three further fields are situated caudally to the insular areas. The anterior sylvian gyrus and dorsal lip of the pseudosylvian sulcus, which we designate "anterior sylvian area", is connected to the ventromedial, suprageniculate, and lateralis medialis nuclei. The fundus and ventral bank of the pseudosylvian sulcus, or "parainsular area", is associated with caudal portions of the medial geniculate complex. The rostral part of the ventral bank of the anterior ectosylvian sulcus, referred to as "ventral anterior ectosylvian area", is heavily interconnected with the lateral posterior-pulvinar complex and the ventromedial nucleus. Present results reveal that these areas interact with a wide array of sensory, motor, and limbic thalamic nuclei. In addition, these data provide a consistent basis for comparisons with cortical fields in other mammals.

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Retinotopic organization within the lateral posterior complex of the cat

Cited by 62 publications

References 69 publications

Two Streams of Attention-Dependent β Activity in the Striate Recipient Zone of Cat's Lateral Posterior–Pulvinar Complex

Two Streams of Attention-Dependent β Activity in the Striate Recipient Zone of Cat's Lateral Posterior–Pulvinar Complex

Visual Pathways Involved in Fear Conditioning Measured with Fear-Potentiated Startle: Behavioral and Anatomic Studies

Insular cortex and neighboring fields in the cat: A redefinition based on cortical microarchitecture and connections with the thalamus

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