<P> In addition, it has been proposed that activation in anterior regions of the fusiform gyri indicate successful recognition . However, levels of activation have been found to depend on the semantic relevance of the object . The term semantic relevance here refers to "a measure of the contribution of semantic features to the core meaning of a concept ." Results showed that objects with high semantic relevance, such as artefacts, created an increase in activation compared to objects with low semantic relevance, such as natural objects . This is due to the proposed increased difficulty to distinguish between natural objects as they have very similar structural properties which makes them harder to identify in comparison to artefacts . Therefore, the easier the object is to identify, the more likely it will be successfully recognized . </P> <P> Another condition that affects successful object recognition performance is that of contextual facilitation . It is thought that during tasks of object recognition, an object is accompanied by a "context frame", which offers semantic information about the object's typical context . It has been found that when an object is out of context, object recognition performance is hindered with slower response times and greater inaccuracies in comparison to recognition tasks when an object was in an appropriate context . Based on results from a study using fMRI, it has been proposed that there is a "context network" in the brain for contextually associated objects with activity largely found in the Parahippocampal cortex (PHC) and the Retrosplenial Complex (RSC). Within the PHC, activity in the Parahippocampal Place Area (PPA), has been found to be preferential to scenes rather than objects; however, it has been suggested that activity in the PHC for solitary objects in tasks of contextual facilitation may be due to subsequent thought of the spatial scene in which the object is contextually represented . Further experimenting found that activation was found for both non-spatial and spatial contexts in the PHC, although activation from non-spatial contexts was limited to the anterior PHC and the posterior PHC for spatial contexts . </P> <P> When someone sees an object, they know what the object is because they've seen it on a past occasion; this is recognition memory . Not only do abnormalities to the ventral (what) stream of the visual pathway effect our ability to recognize an object but also the way in which an object is presented to us . </P> <P> Context allows for a much greater accuracy in object recognition . When an identifiable object is blurred, the accuracy of recognition is much greater when the object is placed in a familiar context . In addition to this, even an unfamiliar context allows for more accurate object recognition compared to the object being shown in isolation . This can be attributed to the fact that objects are typically seen in some setting rather than no setting at all . When the setting the object is in is familiar to the viewer, it becomes much easier to determine what the object is . Though context is not required to correctly recognize, it is part of the association that one makes with a certain object . </P>

Where does object recognition take place in the brain