CR3 - Reading Chapter 3: FOCUS attention on pp 67-89 Figs....

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Reading • Chapter 3: • FOCUS attention on – pp 67-89 – Figs. 3:1-6; 10-11, 13 (section) • BOOK CORRECTION on Fig 3:10 – Advances and Delays are switched! Objectives • Define/illustrate fundamental properties – Period, phase response curves (PRCs) • Understand how entrainment occurs – From PRC to entrainment • Advanced entrainment – T-cycles – “skeleton” photoperiods
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Subjective day and night ! = 24.2 h ! = 24.3 h "# = 1.0 h Subjective day Subjective night x $ = duration of active phase % = duration of rest phase Free-running period Precision Stability Systematic variation
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LD = light:dark cycle e.g., LD12:12 12L12D DD = constant dark LL = constant light FRP varies with light intensity -- BIRD Aschoff's Rule, an Empirical Generalization: _ DD < 24 h, nocturnal _ DD > 24 h, diurnal Diurnal, brighter light _ LL decreases Nocturnal, brighter light • _ LL increases
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What is the FRP? Orten hear
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CR3 - Reading Chapter 3: FOCUS attention on pp 67-89 Figs....

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