Stimulus intensity modifies saccadic reaction time and visual response latency in the superior colliculus.

Journal article

Performance in a reaction time task can be strongly influenced by the physical properties of the stimuli used (e.g., position and intensity). The reduction in reaction time observed with higher-intensity visual stimuli has been suggested to arise from reduced processing time along the visual pathway. If this hypothesis is correct, activity should be registered in neurons sooner for higher-intensity stimuli. We evaluated this hypothesis by measuring the onset of neural activity in the intermed...

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Authors: Bell, A; Meredith, M; Van Opstal, A; Munoz, D

• Journal: Experimental brain research
• Volume: 174
• Issue: 1
• Pages: 53-59
• Publication date: 2006-09-01
• DOI: 10.1007/s00221-006-0420-z
• EISSN: 1432-1106
• ISSN: 0014-4819
• Language: English
• Keywords: Motor Neurons; Photic Stimulation; Saccades; Reaction Time; Superior Colliculi; Male; Neurons, Afferent; Animals; Macaca mulatta