---
abstract: "Monkeys, given the opportunity to move between two featureless chambers, 'sample' first one, then the other in a way which reflects a Poisson decision process. The rate of sampling is higher in red light than in blue and in loud noise than in quietness. We suggest that monkeys 'tune' their sampling rate to the a priori probability of change in the environment."
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creators_name:
  - family: Humphrey
    given: Nicholas K
    honourific: ''
    lineage: ''
  - family: Keeble
    given: Graham R
    honourific: ''
    lineage: ''
date: 1978
date_type: published
datestamp: 2001-08-16
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dir: disk0/00/00/17/36
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eprint_status: archive
eprintid: 1736
fileinfo: /style/images/fileicons/application_pdf.png;/1736/2/Perception78.pdf
full_text_status: public
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keywords: 'timing behaviour, sampling, bio-rhythms, colour, noise, monkeys '
lastmod: 2011-03-11 08:54:46
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metadata_visibility: show
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pagerange: 343-348
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publication: Perception
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refereed: TRUE
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relation_type: []
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reportno: ~
rev_number: 10
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status_changed: 2007-09-12 16:40:00
subjects:
  - behav-neuro-sci
  - bio-ani-behav
  - psy-bio
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title: Effects of red light and loud noise on the rate at which monkeys sample the sensory environment
type: journalp
userid: 123
volume: 7
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