Krüger J, Hauser J. Evoking defined gaze directions in untrained awake monkeys.
J Neurosci Methods 2004;
137:185-92. [PMID:
15262060 DOI:
10.1016/j.jneumeth.2004.02.024]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2003] [Revised: 01/28/2004] [Accepted: 02/16/2004] [Indexed: 11/27/2022]
Abstract
Monkeys were partially surrounded by opaque screens except for some distant small holes through which they observed various stimuli or actions, or well-defined background patterns. Gaze direction was measured by an infrared cornea reflection method. Without training or reward, the animal's gaze was directed through one of the holes for 10-30% of the total time. With holes of appropriately small diameter, the gaze direction can be defined within a range of about 1 degree. Durations of individual glances through the holes, and dependencies on the nature of the displays are reported. The procedure is suited for the electrophysiological investigation of natural, especially foveal vision.
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