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FIGURE 3.4 Data are queried and extracted from the CoCoDat database using the SearchBoard (accessible from the SwitchBoard by clicking Experimental Data under the Perform Search heading; see Figure 3.1). Here, an example illustrates a query for data on IonicConductances from GM-Ctx_Gen (general cortex), GM-L_Gen (general layer), GM-C_Pyr (pyramidal cell), GM-Dend_Ap (apical dendrite). In the expanded hierarchies, numbers in parentheses following the BrainSites indicate the number of returned RecordingSites a given BrainSite is part of. In the case of NeuronType, only the top level of the hierarchy is part of the four returned RecordingSites. No returned RecordingSite contains GM-Ctx_Gen (general cortex) at the BrainRegion level or GM-L_Gen (general layer), however, three BrainSites lower in the hierarchies on both the BrainRegion (sensorimotor cortex, somatosensory cortex and temporal lobe) and Layer (infragranular layer, layer 2/3 and layer 5) levels of description constitute part of the four returned RecordingSites. At the NeuronCompartment level of description, the top level GM-Dend_Ap (apical dendrite) is a part of three out of the four returned RecordingSites while the final site refers to GM-Dend_Ap_shaft (the shaft of the apical dendrite).

FIGURE 3.4 Data are queried and extracted from the CoCoDat database using the SearchBoard (accessible from the SwitchBoard by clicking Experimental Data under the Perform Search heading; see Figure 3.1). Here, an example illustrates a query for data on IonicConductances from GM-Ctx_Gen (general cortex), GM-L_Gen (general layer), GM-C_Pyr (pyramidal cell), GM-Dend_Ap (apical dendrite). In the expanded hierarchies, numbers in parentheses following the BrainSites indicate the number of returned RecordingSites a given BrainSite is part of. In the case of NeuronType, only the top level of the hierarchy is part of the four returned RecordingSites. No returned RecordingSite contains GM-Ctx_Gen (general cortex) at the BrainRegion level or GM-L_Gen (general layer), however, three BrainSites lower in the hierarchies on both the BrainRegion (sensorimotor cortex, somatosensory cortex and temporal lobe) and Layer (infragranular layer, layer 2/3 and layer 5) levels of description constitute part of the four returned RecordingSites. At the NeuronCompartment level of description, the top level GM-Dend_Ap (apical dendrite) is a part of three out of the four returned RecordingSites while the final site refers to GM-Dend_Ap_shaft (the shaft of the apical dendrite).

it is possible to inspect exactly which of the expanded substructures make up the returned RecordingSites and appraise the logical distance between the modeled structure and the data available in the CoCoDat database.

In cases where a query does not return any results, the user can employ the Automatic Relaxation feature implemented on the SearchBoard (see Figure 3.4). By activating the Relax tickbox and specifying BrainRegion, Layer, NeuronType or NeuronCompartment before resubmitting the query, the search routine systematically steps upwards through hierarchy at the desired level of description until experimental data of the designated DataType and Species are returned. This allows the modeler to extract data easily from closely matching RecordingSites contained in the CoCoDat database.

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