Title

Is Navigation in Virtual Reality with fMRI Really Navigation?

Document Type

Article

Publication Date

Summer 7-2013

Publication Source

Journal of Cognitive Neuroscience

Volume

25

Issue

7

Inclusive pages

1008-1019

Peer Reviewed

yes

Abstract

Identifying the neural mechanisms underlying spatial orientation and navigation has long posed a challenge for researchers. Multiple approaches incorporating a variety of techniques and animal models have been used to address this issue. More recently, virtual navigation has become a popular tool for understanding navigational processes. Although combining this technique with functional imaging can provide important information on many aspects of spatial navigation, it is important to recognize some of the limitations these techniques have for gaining a complete understanding of the neural mechanisms of navigation. Foremost, among these is that, when participants perform a virtual navigation task in a scanner, they are lying motionless in a supine position while viewing a video monitor. Here, we provide evidence that spatial orientation and navigation rely to a large extent on locomotion and its accompanying activation of motor, vestibular, and proprioceptive systems. Researchers should therefore consider the impact on the absence of these motion-based systems when interpreting virtual navigation/functional imaging experiments to achieve a more accurate understanding of the mechanisms underlying navigation.

Disciplines

Cognitive Neuroscience | Other Neuroscience and Neurobiology | Psychology

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