# PathwayProjection¶

## Overview¶

PathwayProjections allow information to be passed between mechanisms. A PathwayProjection takes its input from the OutputPort of one Mechanism (its sender), and does whatever conversion is needed to transmit that information to the InputPort of another Mechanism (its receiver). The primary type of PathwayProjection is a MappingProjection.

## Creating a PathwayProjection¶

A PathwayProjection can is created in the same ways as a Projection.

## Structure¶

A PathwayProjection has the same structure as a Projection.

## Execution¶

A PathwayProjection executes in the same was as a Projection.

## Class Reference¶

See Projection.

exception psyneulink.core.components.projections.pathway.pathwayprojection.PathwayProjectionError(error_value)