Abstract：
:Light emitting diodes (LEDs) are extensively used as light sources to investigate visual and visually related function and dysfunction. Here, we describe the design of a compact, low-cost, stand-alone LED-based system that enables the configuration, storage and presentation of elaborate visual stimulation paradigms. The core functionality of this system is provided by a microcontroller whose ultra-low power consumption makes it well suited for long lasting battery applications. The effective use of hardware resources is managed by multi-layered architecture software that provides an intuitive and user-friendly interface. In the configuration mode, different stimulation sequences can be created and memorized for ten channels, independently. LED-driving current output can be set either as continuous or pulse modulated, up to 500 Hz, by duty cycle adjustments. In run mode, multiple-channel stimulus sequences are automatically applied according to the pre-programmed protocol. Steady state visual evoked potentials were successfully recorded in five subjects with no visible electromagnetic interferences from the stimulator, demonstrating the efficacy of combining our prototyped equipment with electrophysiological techniques. Finally, we discuss a number of possible improvements for future development of our project.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Pinto MA,de Souza JK,Baron J,Tierra-Criollo CJdoi
10.1016/j.jneumeth.2011.02.004subject
Has Abstractpub_date
2011-04-15 00:00:00pages
82-91issue
1eissn
0165-0270issn
1872-678Xpii
S0165-0270(11)00079-3journal_volume
197pub_type
杂志文章abstract：:Paper-pencil type tests are traditionally used in the assessment of executive functions (EF); however, concerns have been raised as to whether these represent actual functioning in everyday life. Virtual reality (VR) environments offer a novel alternative for the assessment of cognitive function and therefore have the...
journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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更新日期：2019-01-01 00:00:00
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(01)00401-0
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90036-q
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.09.001
更新日期：2014-01-15 00:00:00
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.11.002
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)00132-z
更新日期：1995-03-01 00:00:00
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/j.jneumeth.2020.108683
更新日期：2020-05-15 00:00:00
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.04.002
更新日期：2013-07-15 00:00:00
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
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journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(84)90066-9
更新日期：1984-02-01 00:00:00
