Multiple somatosensory areas in the anterior parietal cortex of the California ground squirrel (
            <i>Spermophilus beecheyii</i>
            )

Slutsky, Daniel A.; Manger, Paul R.; Krubitzer, Leah

doi:10.1002/(sici)1096-9861(20000124)416:4<521::aid-cne8>3.0.co;2-#

Cited by 44 publications

(52 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From an evolutionary perspective, the findings above support the view that neurons in primary areas and first-order nuclei may have emerged from ancestral secondary/higher-order-type neurons8687. First-order neurons may have been co-opted from a ground-state pool of higher-order type neurons based on their ability to convey signals generated by high-resolution body receptors because of specific metabolic, electrophysiological and connectivity features19.…”

Section: Developmental Emergence and Plasticity Of Neocortical Circuitssupporting

confidence: 61%

Fate and freedom in developing neocortical circuits

Jabaudon

2017

Nat Commun

104

View full text Add to dashboard Cite

The activity of neuronal circuits of the neocortex underlies our ability to perceive the world and interact with our environment. During development, these circuits emerge from dynamic interactions between cell-intrinsic, genetically determined programs and input/activity-dependent signals, which together shape these circuits into adulthood. Building on a large body of experimental work, several recent technological developments now allow us to interrogate these nature–nurture interactions with single gene/single input/single-cell resolution. Focusing on excitatory glutamatergic neurons, this review discusses the genetic and input-dependent mechanisms controlling how individual cortical neurons differentiate into specialized cells to assemble into stereotypical local circuits within global, large-scale networks.

show abstract

Section: Developmental Emergence and Plasticity Of Neocortical Circuitssupporting

confidence: 61%

Fate and freedom in developing neocortical circuits

Jabaudon

2017

Nat Commun

104

View full text Add to dashboard Cite

show abstract

“…This topographic pattern is similar to the primary somatosensory areas of placental mammals [see Kaas, 1983 for review]. Area 3b of short-tailed opossums has similar architectonic characteristics [Huffman et al, 1999; Catania et al, 2000b; Frost et al, 2000] to other marsupials, such as the wallaby [Ashwell et al, 1996], Virginia opossum [Foster et al, 1981; Beck et al, 1996] and the brush-tailed possum [Weller, 1972], and placental mammals [e.g., Sur et al, 1978; Chapin and Lin, 1984; Krubitzer et al, 1986; Dawson and Killackey, 1987; Slutsky et al, 2000; Remple et al, 2003; Wong and Kaas, 2008]. These characteristics include a well developed, densely packed granular layer 4 and dense myelination.…”

Section: Discussionmentioning

confidence: 82%

An Architectonic Study of the Neocortex of the Short-Tailed Opossum <i>(Monodelphis domestica)</i>

Wong

Kaas²

2009

Brain Behav Evol

View full text Add to dashboard Cite

Short-tailed opossums (Monodelphis domestica) belong to the branch of marsupial mammals that diverged from eutherian mammals approximately 180 million years ago. They are small in size, lack a marsupial pouch, and may have retained more morphological characteristics of early marsupial neocortex than most other marsupials. In the present study, we used several different histochemical and immunochemical procedures to reveal the architectonic characteristics of cortical areas in short-tailed opossums. Subdivisions of cortex were identified in brain sections cut in the coronal, sagittal, horizontal or tangential planes and processed for a calcium-binding protein, parvalbumin (PV), neurofilament protein epitopes recognized by SMI-32, the vesicle glutamate transporter 2 (VGluT2), myelin, cytochrome oxidase (CO), and Nissl substance. These different procedures revealed similar boundaries among areas, suggesting that functionally relevant borders were detected. The results allowed a fuller description and more precise demarcation of previously identified sensory areas, and the delineation of additional subdivisions of cortex. Area 17 (V1) was especially prominent, with a densely populated layer 4, high myelination levels, and dark staining of PV and VGluT2 immunopositive terminations. These architectonic features were present, albeit less pronounced, in somatosensory and auditory cortex. The major findings support the conclusion that short-tailed opossums have fewer cortical areas and their neocortex is less distinctly laminated than most other mammals.

show abstract

“…1996; Woolsey 1943). The cortices of flying foxes and California ground squirrels have also been examined to reveal multiple somatosensory representations (Krubitzer and Calford 1992; Slutsky et. al.…”

Section: Introductionmentioning

confidence: 99%

An examination of somatosensory area SIII in ferret cortex

Foxworthy

Meredith

2011

Somatosensory & Motor Research

View full text Add to dashboard Cite

A somatotopically organized region on the suprasylvian gyrus of the ferret was examined using multiunit recordings and anatomical tracer injections. This area, which contains a representation of the face, was bordered by the primary somatosensory area (SI), anteriorly, and by the visually-responsive rostral posterior parietal cortex (PPr), posteriorly. Anatomical tracers revealed connections to this region from cortical areas MI, SI, MRSS, PPR and the thalamic posterior nucleus. These results are consistent with previous work in ferrets as well as with the location, physiology and connectivity of area SIII in cats. Given its associations, functional properties, location and homology, it is proposed that this region represents the third cortical somatosensory area (SIII) in ferrets.

show abstract

Multiple somatosensory areas in the anterior parietal cortex of the California ground squirrel ( Spermophilus beecheyii )

Cited by 44 publications

References 63 publications

Fate and freedom in developing neocortical circuits

Fate and freedom in developing neocortical circuits

An Architectonic Study of the Neocortex of the Short-Tailed Opossum <i>(Monodelphis domestica)</i>

An examination of somatosensory area SIII in ferret cortex

Contact Info

Product

Resources

About