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Details about the neuroanatomical projections from SS-bfd to CP

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Report IDSending structure Receiving structureProjection strengthTechniqueGeneral description projectionCollatorAssociated reference
38942 Primary somatosensory area barrel fieldCaudoputamen existsbiotinylated dextran amine (BDA)
The BDA and FR injections gave rise to labeling in several intracortical and subcortical targets. Topographically organized fiber complexes were found in the ipsilateral neostriatum and in the thalamic nuclei together with retrogradely labeled cells (Alloway et al., 1999).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
General description technique/protocol: In each experiment, restricted injections of BDA and FR were placed into separate regions of the SI barrel cortex (Fig. 1). Ten of the 13 experiments were selected by criterion of labeling in the neostriatum and thalamus and were used previously in a study of corticostriatal organization (Alloway et al., 1999). All cases contained anterograde BDA and FR labeling in the pontine nuclei. All injections were restricted to the gray matter. The outlines and position of the injection sites were estimated with respect to the whisker barrels by comparison of adjacent BDA- and CO-processed tangential sections through cortical layers IV and V. The position of injections in the whisker barrel field corresponded to the electrophysiological recordings made before tracer injection. The diameter of the injection sites (Table 1), defined by the maximum width of dense staining in layer V (the cortical layer containing cell bodies of corticopontine neurons), ranged from 200 to 800 Ám. Each injection involved one to two barrels (Table 1). In five cases, both tracers were confined to the same row of barrels ("within rows"), and in eight cases the tracers were injected into separate rows of barrels ("across rows"). The edge-to-edge separation between the two injection sites was measured in layer V (Fig. 2). Injection sites never overlapped. Photomicrographs of representative injection sites are shown in Figure 2.

Details about the neuroanatomical projections from SS-bfd to PG

To view more data and metadata associated with each report, click on its ID.

Report IDSending structure Receiving structureProjection strengthTechniqueGeneral description projectionCollatorAssociated reference
38943 Primary somatosensory area barrel fieldPontine gray light/moderatebiotinylated dextran amine (BDA)
The BDA and FR clusters in case D46 were partially overlapping at practically all rostrocaudal or mediolateral levels containing labeling (Figs. 3D, 4, 7A,B). The total amount of overlap in this case was 12.1%. The separation of the two injections was 930 Ám. In another within row experiment (D53), the separation distance between the injection sites was much larger (1700 Ám). Although the same overall shape and lamellar distribution pattern was seen in this case, the labeled clusters were clearly more segregated (Fig. 7C,D), and the amount of total corticopontine overlap was only 1.7%. Five within row experiments demonstrated decreasing amount of overlap with increasing separation of the cortical sites of origin (Table 1, Fig. 8).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38944 Primary somatosensory area barrel fieldPontine gray strongbiotinylated dextran amine (BDA)
The BDA and FR clusters in case D46 were partially overlapping at practically all rostrocaudal or mediolateral levels containing labeling (Figs. 3D, 4, 7A,B). The total amount of overlap in this case was 12.1%. The separation of the two injections was 930 Ám. In another within row experiment (D53), the separation distance between the injection sites was much larger (1700 Ám). Although the same overall shape and lamellar distribution pattern was seen in this case, the labeled clusters were clearly more segregated (Fig. 7C,D), and the amount of total corticopontine overlap was only 1.7%. Five within row experiments demonstrated decreasing amount of overlap with increasing separation of the cortical sites of origin (Table 1, Fig. 8).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38945 Primary somatosensory area barrel fieldPontine gray light/moderateFluoroRuby
The BDA and FR clusters in case D46 were partially overlapping at practically all rostrocaudal or mediolateral levels containing labeling (Figs. 3D, 4, 7A,B). The total amount of overlap in this case was 12.1%. The separation of the two injections was 930 Ám. In another within row experiment (D53), the separation distance between the injection sites was much larger (1700 Ám). Although the same overall shape and lamellar distribution pattern was seen in this case, the labeled clusters were clearly more segregated (Fig. 7C,D), and the amount of total corticopontine overlap was only 1.7%. Five within row experiments demonstrated decreasing amount of overlap with increasing separation of the cortical sites of origin (Table 1, Fig. 8).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38946 Primary somatosensory area barrel fieldPontine gray strongFluoroRuby
The BDA and FR clusters in case D46 were partially overlapping at practically all rostrocaudal or mediolateral levels containing labeling (Figs. 3D, 4, 7A,B). The total amount of overlap in this case was 12.1%. The separation of the two injections was 930 Ám. In another within row experiment (D53), the separation distance between the injection sites was much larger (1700 Ám). Although the same overall shape and lamellar distribution pattern was seen in this case, the labeled clusters were clearly more segregated (Fig. 7C,D), and the amount of total corticopontine overlap was only 1.7%. Five within row experiments demonstrated decreasing amount of overlap with increasing separation of the cortical sites of origin (Table 1, Fig. 8).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38947 Primary somatosensory area barrel fieldPontine gray moderatebiotinylated dextran amine (BDA)
When BDA and FR injections were placed in different rows, the ensuing labeled terminal fields had a lamellar shape as described above. Instead of producing a dual lamellar pattern, however, the labeled clusters for both tracers appeared to be localized within a single lamellar volume. Case D48 illustrates this finding in both sagittal and transverse slices (Fig. 5B, slices 50-80; 5C, slices 60-80). The BDA labeling arising from a barrel in row D tended to extend more ventrally in the pontine nuclei than the FR labeling arising in an adjacent barrel in row C (Figs. 5B, slices 60-80, 6D-F). These topographic differences however, were less conspicuous than the marked inside-out pattern observed in the within row cases. In case D48, the injection sites were separated by only 120 Ám in cortical layer V, and total corticopontine overlap was 14.5% (Fig. 7E,F).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38948 Primary somatosensory area barrel fieldPontine gray moderateFluoroRuby
When BDA and FR injections were placed in different rows, the ensuing labeled terminal fields had a lamellar shape as described above. Instead of producing a dual lamellar pattern, however, the labeled clusters for both tracers appeared to be localized within a single lamellar volume. Case D48 illustrates this finding in both sagittal and transverse slices (Fig. 5B, slices 50-80; 5C, slices 60-80). The BDA labeling arising from a barrel in row D tended to extend more ventrally in the pontine nuclei than the FR labeling arising in an adjacent barrel in row C (Figs. 5B, slices 60-80, 6D-F). These topographic differences however, were less conspicuous than the marked inside-out pattern observed in the within row cases. In case D48, the injection sites were separated by only 120 Ám in cortical layer V, and total corticopontine overlap was 14.5% (Fig. 7E,F).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38949 Primary somatosensory area barrel fieldPontine gray strongbiotinylated dextran amine (BDA)
In another across row case (D51), the two injection sites were separated by 630 Ám (Fig. 7G,H). The labeled clusters in D51 were also confined within a lamellar subspace. The clusters appeared to be more segregated than in case D48, as indicated by a reduction in the total amount of corticopontine overlap (9.6%). As Table 1 indicates, we observed decreasing amounts of corticopontine overlap with increasing separation of the tracer injection sites (Table 1, Fig. 8).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38950 Primary somatosensory area barrel fieldPontine gray strongFluoroRuby
In another across row case (D51), the two injection sites were separated by 630 Ám (Fig. 7G,H). The labeled clusters in D51 were also confined within a lamellar subspace. The clusters appeared to be more segregated than in case D48, as indicated by a reduction in the total amount of corticopontine overlap (9.6%). As Table 1 indicates, we observed decreasing amounts of corticopontine overlap with increasing separation of the tracer injection sites (Table 1, Fig. 8).
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38951 Primary somatosensory area barrel fieldPontine gray moderatebiotinylated dextran amine (BDA)
Collator note: see Figure 7 page 8480 and Table 1 page 8475.
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38952 Primary somatosensory area barrel fieldPontine gray lightFluoroRuby
Collator note: see Figure 7 page 8480 and Table 1 page 8475.
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38953 Primary somatosensory area barrel fieldPontine gray strongbiotinylated dextran amine (BDA)
Collator note: see Figure 7 page 8480 and Table 1 page 8475.
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
38954 Primary somatosensory area barrel fieldPontine gray moderateFluoroRuby
Collator note: see Figure 7 page 8480 and Table 1 page 8475.
Leergaard T.B., Alloway K.D., Mutic J.J. & Bjaalie J.G., 2000
General description technique/protocol: In each experiment, restricted injections of BDA and FR were placed into separate regions of the SI barrel cortex (Fig. 1). Ten of the 13 experiments were selected by criterion of labeling in the neostriatum and thalamus and were used previously in a study of corticostriatal organization (Alloway et al., 1999). All cases contained anterograde BDA and FR labeling in the pontine nuclei. All injections were restricted to the gray matter. The outlines and position of the injection sites were estimated with respect to the whisker barrels by comparison of adjacent BDA- and CO-processed tangential sections through cortical layers IV and V. The position of injections in the whisker barrel field corresponded to the electrophysiological recordings made before tracer injection. The diameter of the injection sites (Table 1), defined by the maximum width of dense staining in layer V (the cortical layer containing cell bodies of corticopontine neurons), ranged from 200 to 800 Ám. Each injection involved one to two barrels (Table 1). In five cases, both tracers were confined to the same row of barrels ("within rows"), and in eight cases the tracers were injected into separate rows of barrels ("across rows"). The edge-to-edge separation between the two injection sites was measured in layer V (Fig. 2). Injection sites never overlapped. Photomicrographs of representative injection sites are shown in Figure 2.