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Chapter 3: Layers


Layers form a container object for cells

Layer Shells


KeywordValueDescription
LAYER_SHELL
N/A
Indicates the start of a layer shell definition section
TYPE
name(string)
The name which will be used to refer to this layer shell
LOWER
value(real)
Layers are placed in columns based on percentages. The LOWER value represents where on the Column this Layer will begin. Ex. A value of 35 means that the Layer will begin at .35*the Column's height
UPPER
value(real)
Layers are placed in columns based on percentages. The UPPER value represents where on the Column this Layer will end. Ex. A value of 35 means that the Layer will end at .35*the Column's height.
END_LAYER_SHELL
N/A
Indicates the End of a layer shell definition section

Example

LAYER_SHELL
        TYPE                    layer_shell_A
        LOWER                   0
        UPPER                   35
END_LAYER_SHELL

Fill Layers


KeywordValueDescription
LAYER
N/A
Indicates the start of a fill layer section
TYPE
name(string)
The name which will be used to refer to this layer
LAYER_SHELL
name(string)
The name of the layer shell which will be used by this layer
CELL_TYPE
celltype(string)
quantity(integer)
This layer is to be filled with cells of the type given and the quantity specified. More than one CELL_TYPE line can be used to put different cell types in a layer.
CONNECT
celltype(string)
compartment(string)
celltype(string)
compartment(string)
synapse(string)
probability(real)
speed(integer)
Synapse connections within a Layer. The source (first two) connects to the destination (second two) with the synapse type specified. Connections are made randomly with the probability specified. The speed indicates how quickly the destination will receive the signal from the source.
END_LAYER
N/A
Indicates the end of a fill layer section

Example

LAYER
        TYPE                    layer_A
        LAYER_SHELL             layer_shell_A
        CELL_TYPE               Excitatory      1000
        CELL_TYPE               Inhibitory      250
        CONNECT
                                Excitatory      s1
                                Excitatory      s1
                                ExcitF2Hebb0    0.1             3
        CONNECT
                                Excitatory      s1
                                Inhibitory      s1
                                ExcitF2Hebb0    0.1             3
        CONNECT
                                Inhibitory      s1
                                Excitatory      s1
                                InhibF1Hebb0    0.05            3
        CONNECT
                                Inhibitory      s1
                                Inhibitory      s1
                                InhibF1Hebb0    0.05            3
END_LAYER

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Last updated Monday 6/5/2006