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Shaping the Future

Chris Colwell, Ph.D.

Contact Information:

Fax Number:

310-206-5060

Office Phone Number:

310-206-3973

Work Address:

Laboratory
760 Westwood Plaza
Los Angeles, CA 90095
UNITED STATES
Office
760 Westwood Plaza
Los Angeles, CA 90024
UNITED STATES

Email Address:

ccolwell@mednet.ucla.edu

Website:

  

Home Page:

     Home Page


Professor, Psychiatry and Biobehavioral Sciences

Member, ACCESS Program: Dept. of Molecular, Cell & Integrative Physiology

ACCESS Program

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Brain Research Institute

Neuroscience IDP

Pharmacology Home Area

Faculty, Molecular, Cellular, and Integrative Physiology IDP


Detailed Biography:

Christopher S. Colwell is a Neuroscientist who has served on the UCLA School of Medicine faculty since he joined the Department of Psychiatry and Biobehavioral Sciences in 1997. He became a Professor in 2008. Dr. Colwell earned his B.S. in Neuroscience from Vanderbilt University in 1985. During this time, he started his research in circadian rhythms under the mentorship of Dr. T. Page. Dr. Colwell earned his Ph.D. in Biology at the University of Virginia in 1991. His thesis work explored the neural mechanisms by which light regulates circadian rhythms. Dr. Colwell continued this line of research during a postdoctoral fellowship at the University of Virginia with Dr. G. Block. A second postdoctoral fellowship was carried out on the topics of motor control and excitotoxicity in the laboratory of Dr. M. Levine at UCLA. Dr. Colwell learned how to utilize imaging techniques to measure calcium levels inside neurons while a visiting scientist in the laboratory of Dr. Konnerth at the University of Saarland, Germany. Since Dr. Colwell's faculty appointment at UCLA, his laboratory's research has focused on understanding the mechanisms underlying circadian rhythms in mammals. Dysfunction in the timing these daily cycles is a key symptom in a number of neurological and psychiatric disorders. Better understanding the basic biology of this timing system should result in new therapies to improve the quality of life of these patients and the people who care for them.

Publications:

Lucassen Eliane A, van Diepen Hester C, Houben Thijs, Michel Stephan, Colwell Christopher S, Meijer Johanna H   Role of vasoactive intestinal peptide in seasonal encoding by the suprachiasmatic nucleus clock The European journal of neuroscience, 2012; 35(9): 1466-74.
Kudo Takashi, Loh Dawn H, Truong Danny, Wu Yingfei, Colwell Christopher S   Circadian dysfunction in a mouse model of Parkinson's disease Experimental neurology, 2011; 232(1): 66-75.
Gale John E, Cox Heather I, Qian Jingyi, Block Gene D, Colwell Christopher S, Matveyenko Aleksey V   Disruption of circadian rhythms accelerates development of diabetes through pancreatic beta-cell loss and dysfunction Journal of biological rhythms, 2011; 26(5): 423-33.
Colwell Christopher S   Linking neural activity and molecular oscillations in the SCN Nature reviews. Neuroscience, 2011; 12(10): 553-69.
Kim Jeong Sook, Kim Woong Bin, Kim Young-Beom, Lee Yeon, Kim Yoon Sik, Shen Feng-Yan, Lee Seung Won, Park Dawon, Choi Hee-Joo, Hur Jinyoung, Park Joong Jean, Han Hee Chul, Colwell Christopher S, Cho Young-Wuk, Kim Yang In   Chronic hyperosmotic stress converts GABAergic inhibition into excitation in vasopressin and oxytocin neurons in the rat The Journal of neuroscience : the official journal of the Society for Neuroscience, 2011; 31(37): 13312-22.
Fulton Daniel, Paez Pablo, Spreur Vilma, Handley Vance, Colwell Christopher S, Campagnoni Anthony, Fisher Robin   Developmental activation of the proteolipid protein promoter transgene in neuronal and oligodendroglial cells of neostriatum in mice Developmental neuroscience, 2011; 33(2): 170-84.
Nakamura Takahiro J, Nakamura Wataru, Yamazaki Shin, Kudo Takashi, Cutler Tamara, Colwell Christopher S, Block Gene D   Age-related decline in circadian output The Journal of neuroscience : the official journal of the Society for Neuroscience, 2011; 31(28): 10201-5.
Atkinson Susan E, Maywood Elizabeth S, Chesham Johanna E, Wozny Christian, Colwell Christopher S, Hastings Michael H, Williams Stephen R   Cyclic AMP signaling control of action potential firing rate and molecular circadian pacemaking in the suprachiasmatic nucleus Journal of biological rhythms, 2011; 26(3): 210-20.
Loh Dawn H, Dragich Joanna M, Kudo Takashi, Schroeder Analyne M, Nakamura Takahiro J, Waschek James A, Block Gene D, Colwell Christopher S   Effects of vasoactive intestinal peptide genotype on circadian gene expression in the suprachiasmatic nucleus and peripheral organs Journal of biological rhythms, 2011; 26(3): 200-9.
Gamble Karen L, Kudo Takashi, Colwell Christopher S, McMahon Douglas G   Gastrin-releasing peptide modulates fast delayed rectifier potassium current in Per1-expressing SCN neurons Journal of biological rhythms, 2011; 26(2): 99-106.
Colwell Christopher S   Neuroscience: Sleepy neurons? Nature, 2011; 472(7344): 427-8.
Schroeder Analyne M, Loh Dawn H, Jordan Maria C, Roos Kenneth P, Colwell Christopher S   Baroreceptor reflex dysfunction in the BACHD mouse model of Huntington's disease PLoS currents, 2011; 3(1): RRN1266.
Kudo Takashi, Schroeder Analyne, Loh Dawn H, Kuljis Dika, Jordan Maria C, Roos Kenneth P, Colwell Christopher S   Dysfunctions in circadian behavior and physiology in mouse models of Huntington's disease Experimental neurology, 2011; 228(1): 80-90.
Mengatto Cristiane Machado, Mussano Federico, Honda Yoshitomo, Colwell Christopher S, Nishimura Ichiro   Circadian rhythm and cartilage extracellular matrix genes in osseointegration: a genome-wide screening of implant failure by vitamin D deficiency PloS one, 2011; 6(1): e15848.
Kudo Takashi, Loh Dawn H, Kuljis Dika, Constance Cara, Colwell Christopher S   Fast delayed rectifier potassium current: critical for input and output of the circadian system The Journal of neuroscience : the official journal of the Society for Neuroscience, 2011; 31(8): 2746-55.
Schroeder Analyne, Loh Dawn H, Jordan Maria C, Roos Kenneth P, Colwell Christopher S   Circadian regulation of cardiovascular function: a role for vasoactive intestinal peptide American journal of physiology. Heart and circulatory physiology, 2011; 300(1): H241-50.
Hu Wang-Ping, Li Jia-Da, Colwell Christopher S, Zhou Qun-Yong   Decreased REM sleep and altered circadian sleep regulation in mice lacking vasoactive intestinal polypeptide Sleep, 2011; 34(1): 49-56.
Fulton Daniel, Paez Pablo M, Fisher Robin, Handley Vance, Colwell Christopher S, Campagnoni Anthony T   Regulation of L-type Ca++ currents and process morphology in white matter oligodendrocyte precursor cells by golli-myelin proteins Glia, 2010; 58(11): 1292-303.
Nakamura TJ, Sellix MT, Kudo T, Nakao N, Yoshimura T, Ebihara S, Colwell CS and Block GD   Estrous Variations of Circadian Clock Gene Expression in Reproductive Tissues, Steriods, 2010; 75: 203-212.
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Christopher S. Colwell   Preventing dehydration during sleep, Nature Neuroscience, 2010; 13(4): 1-2.
Loh Dawn H, Navarro Juliana, Hagopian Arkady, Wang Louisa M, Deboer Tom, Colwell Christopher S   Rapid changes in the light/dark cycle disrupt memory of conditioned fear in mice PloS one, 2010; 5(9): .
Colwell Christopher S   Preventing dehydration during sleep Nature neuroscience, 2010; 13(4): 403-4.
Nakamura Takahiro J, Sellix Michael T, Kudo Takashi, Nakao Nobuhiro, Yoshimura Takashi, Ebihara Shizufumi, Colwell Christopher S, Block Gene D   Influence of the estrous cycle on clock gene expression in reproductive tissues: effects of fluctuating ovarian steroid hormone levels Steroids, 2010; 75(3): 203-12.
Dragich Joanna M, Loh Dawn H, Wang Louisa M, Vosko Andrew M, Kudo Takashi, Nakamura Takahiro J, Odom Irene H, Tateyama Sei, Hagopian Arkady, Waschek James A, Colwell Christopher S   The role of the neuropeptides PACAP and VIP in the photic regulation of gene expression in the suprachiasmatic nucleus The European journal of neuroscience, 2010; 31(5): 864-75.
Itri Jason N, Vosko Andrew M, Schroeder Analyne, Dragich Joanna M, Michel Stephan, Colwell Christopher S   Circadian regulation of a-type potassium currents in the suprachiasmatic nucleus Journal of neurophysiology, 2010; 103(2): 632-40.
Dragich JM, Loh DH, Wang LM, Vosko AM, Kudo T, Nakamura TJ, Odom IH, Tateyama S, Hagopian A, Waschek JA and Colwell CS   The Role of the Neuropeptides PACAP and VIP in the Photic Regulation of Gene Expression in the Suprachiasmatic Nucleus. , Eur. J. Neurosci, 2009; 31: 864-875.
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Itri JN, Vosko AM, Schroeder A, Dragich JM, Michel S, and Colwell CS   Circadian Regulation of A-type Potassium Currents in the Suprachiasmatic Nucleus, J Neurophysiol, 2009; 103: 632-640.
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Wang Louisa M-C, Dragich Joanna M, Kudo Takashi, Odom Irene H, Welsh David K, O'Dell Thomas J, Colwell Christopher S   Expression of the circadian clock gene Period2 in the hippocampus: possible implications for synaptic plasticity and learned behaviour ASN neuro, 2009; 1(3): .
Wang LMC, Dragich JM, Kudo T, Odom IH, Welsh DK, O?Dell TJ, Colwell CS   Expression of the circadian clock gene Period2 in the hippocampus: Possible implications for synaptic plasticity and learned behavior, ASN_Neuro, 2009; 1(3): 139-152.
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Paez P, Fulton D, Spreuer V, Handley V, Campagnoni C, Macklin W, Colwell CS, and Campagnoni AT   Golli myelin basic proteins regulate oligodendroglial progenitor cell migration through voltage-gated Ca2+ influx. , J. Neuroscience, 2009; 29(20): 6663-6676.
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Ciarleglio CM, Gamble KL, Axley JC, Strauss BR, Cohen JY, CS Colwell, and DG McMahon   Population Encoding by Circadian Clock Neurons Organizes Circadian Behavior, J. Neuroscience, 2009; 29(6): 1670-1676.
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Ciarleglio Christopher M, Gamble Karen L, Axley John C, Strauss Benjamin R, Cohen Jeremiah Y, Colwell Christopher S, McMahon Douglas G   Population encoding by circadian clock neurons organizes circadian behavior The Journal of neuroscience : the official journal of the Society for Neuroscience, 2009; 29(6): 1670-6.
Paez P, Fulton D, Colwell CS, Campagnoni AT   Voltage-operated Ca2+ and Na+ channels in the oligodendrocyte linage, J. Neuroscience Res, 2008; .
Choi HJ, Lee CJ, Schroeder A, Kim YS, Jung SH, JS Kim JS, Kim DY, Sohn EJ, Han HC, Hong SK, Colwell CS, Kim YI   Excitatory Actions of GABA in the Suprachiasmatic Nucleus, J. Neuroscience, 2008; 28(21): 5450-9.
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Wang LM, Schroeder A, Loh D, Smith D, Lin K, Han JH, Michel S, Hummer DL, Ehlen JC, Albers HE, Colwell CS   Role for the NR2B Subunit of the NMDA Receptor in Mediating Light Input to the Circadian System, Eur. J. Neurosci, 2008; 27(7): 1771-9.
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Chaudhury D, Loh DH, Dragich J, Hagopian A, Colwell CS   Select cognitive deficits in Vasoactive Intestinal Peptide deficient mice, BMC_Neuroscience, 2008; 9: 63.
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Loh DH, Abad C, Colwell CS, Waschek JA   Vasoactive Intestinal Peptide is Critical for Circadian Regulation of Glucocorticoids, Neuroendocrinology, 2008; 88(4): 246-255.
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Choi Hee Joo, Lee C Justin, Schroeder Analyne, Kim Yoon Sik, Jung Seung Hoon, Kim Jeong Sook, Kim Do Young, Son Eun Ju, Han Hee Chul, Hong Seung Kil, Colwell Christopher S, Kim Yang In   Excitatory actions of GABA in the suprachiasmatic nucleus The Journal of neuroscience : the official journal of the Society for Neuroscience, 2008; 28(21): 5450-9.
Loh Dawn H, Abad Catalina, Colwell Christopher S, Waschek James A   Vasoactive intestinal peptide is critical for circadian regulation of glucocorticoids Neuroendocrinology, 2008; 88(4): 246-55.
Chaudhury Dipesh, Loh Dawn H, Dragich Joanna M, Hagopian Arkady, Colwell Christopher S   Select cognitive deficits in vasoactive intestinal peptide deficient mice BMC neuroscience, 2008; 9(6): 63.
Colwell Christopher S   Soporific signaling: how flies sleep through the night Nature neuroscience, 2007; 10(9): 1079-80.
Vosko Andrew M, Schroeder Analyne, Loh Dawn H, Colwell Christopher S   Vasoactive intestinal peptide and the mammalian circadian system General and comparative endocrinology, 2007; 152(2-3): 165-75.
Brown T, Colwell CS, Waschek J, Piggins H   Disrupted neuronal activity rhythms in the suprachiasmatic nuclei of vasoactive intestinal polypeptide-deficient mice, J. Neurophysiol, 2007; 97 : 2553-2558.
C.S. Colwell   Soporific signaling: how flies sleep through the night, Nature Neuroscience, 2007; 10(9): 1079-1080.
Vosko AM, Schroeder A, Loh DH, Colwell CS   Vasoactive intestinal peptide and the mammalian circadian system, Gen Comp Endocrinol, 2007; 152(2-3): 165-175.
Colwell Christopher S   BK channels and circadian output Nature neuroscience, 2006; 9(8): 985-6.
Kim YI, Choi H-J, Colwell CS   BDNF Regulation of NMDA Receptor-Mediated Synaptic Currents in Suprachiasmatic Nucleus Neurons, J. Neurosci. Res, 2006; 84(7): 1512-20.
Michel S, Clark JP, Ding JM, Colwell CS   BDNF and Neurotrophin Receptors Modulate Glutamate-Induced Phase Shifts of the Suprachiasmatic Nucleus, Eur. J. Neuroscience, 2006; 24(4): 1109-16.
Colwell CS   BK channels and circadian output, Nature Neuroscience, 2006; 9(8): 985-6.
Feng JM, Hu YK, Xie LH, Colwell CS, Shao XM, Sun XP, Chen B, Tang H, Campagnoni AT   Golli protein negatively regulates store depletion-induced calcium influx in T cells, Immunity, 2006; 24(6): 717-727.
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Michel S, Itri J, Han JH, Gniotczynski K, Colwell CS   Regulation of glutamatergic signalling by PACAP in the mammalian suprachiasmatic nucleus, BMC_Neuroscience, 2006; 7: 15.
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Feng Ji-Ming, Hu Yanhong K, Xie Lai-Hua, Colwell Christopher S, Shao Xuesi M, Sun Xiao-Ping, Chen Boming, Tang Hezhen, Campagnoni Anthony T   Golli protein negatively regulates store depletion-induced calcium influx in T cells Immunity, 2006; 24(6): 717-27.
Michel Stephan, Itri Jason, Han Jung H, Gniotczynski Kathryn, Colwell Christopher S   Regulation of glutamatergic signalling by PACAP in the mammalian suprachiasmatic nucleus BMC neuroscience, 2006; 7(6): 15.
Wang Louisa M, Suthana Nanthia A, Chaudhury Dipesh, Weaver David R, Colwell Christopher S   Melatonin inhibits hippocampal long-term potentiation The European journal of neuroscience, 2005; 22(9): 2231-7.
Wang, LM Suthana, NA Chaudhury, D Weaver, DR Colwell, CS   Melatonin inhibits hippocampal long-term potentiation The European journal of neuroscience, 2005; 22(9): 2231-7.
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Jacobs, EC Pribyl, TM Kampf, K Campagnoni, C Colwell, CS Reyes, SD Martin, M Handley, V Hiltner, TD Readhead, C Jacobs, RE Messing, A Fisher, RS Campagnoni, AT   Region-specific myelin pathology in mice lacking the golli products of the myelin basic protein gene The Journal of neuroscience : the official journal of the Society for Neuroscience. , 2005; 25(30): 7004-13.
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Jacobs Erin C, Pribyl Thomas M, Feng Ji-Ming, Kampf Kathy, Spreur Vilma, Campagnoni Celia, Colwell Christopher S, Reyes Samuel D, Martin Melanie, Handley Vance, Hiltner Timothy D, Readhead Carol, Jacobs Russell E, Messing Albee, Fisher Robin S, Campagnoni Anthony T   Region-specific myelin pathology in mice lacking the golli products of the myelin basic protein gene The Journal of neuroscience : the official journal of the Society for Neuroscience, 2005; 25(30): 7004-13.
Aton SJ, Colwell CS, Harmar AJ, Waschek J, and Herzog ED   Vasoactive intestinal polypeptide mediates circadian rhythmicity and synchrony in distinct subsets of mammalian clock neurons, Nature Neurosci, 2005; 8(4): 476-483.
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Chaudhury, D Wang, LM Colwell, CS   Circadian regulation of hippocampal long-term potentiation Journal of biological rhythms. , 2005; 20(3): 225-36.
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Chaudhury Dipesh, Wang Louisa M, Colwell Christopher S   Circadian regulation of hippocampal long-term potentiation Journal of biological rhythms, 2005; 20(3): 225-36.
Itri Jason N, Michel Stephan, Vansteensel Mariska J, Meijer Johanna H, Colwell Christopher S   Fast delayed rectifier potassium current is required for circadian neural activity Nature neuroscience, 2005; 8(5): 650-6.
Itri, JN Michel, S Vansteensel, MJ Meijer, JH Colwell, CS   Fast delayed rectifier potassium current is required for circadian neural activity Nature neuroscience. , 2005; 8(5): 650-6.
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Aton Sara J, Colwell Christopher S, Harmar Anthony J, Waschek James, Herzog Erik D   Vasoactive intestinal polypeptide mediates circadian rhythmicity and synchrony in mammalian clock neurons Nature neuroscience, 2005; 8(4): 476-83.
Colwell Christopher S   Bridging the gap: coupling single-cell oscillators in the suprachiasmatic nucleus Nature neuroscience, 2005; 8(1): 10-2.
Colwell, CS Michel, S Itri, J Rodriguez, W Tam, J Lelièvre, V Hu, Z Waschek, JA   Selective deficits in the circadian light response in mice lacking PACAP American journal of physiology. Regulatory, integrative and comparative physiology. , 2004; 287(5): R1194-201.
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Itri Jason, Michel Stephan, Waschek James A, Colwell Christopher S   Circadian rhythm in inhibitory synaptic transmission in the mouse suprachiasmatic nucleus Journal of neurophysiology, 2004; 92(1): 311-9.
Itri, J Michel, S Waschek, JA Colwell, CS   Circadian rhythm in inhibitory synaptic transmission in the mouse suprachiasmatic nucleus Journal of neurophysiology. , 2004; 92(1): 311-9.
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Colwell Christopher S, Michel Stephan, Itri Jason, Rodriguez Williams, Tam J, Lelievre Vincent, Hu Zhou, Liu X, Waschek James A   Disrupted circadian rhythms in VIP- and PHI-deficient mice American journal of physiology. Regulatory, integrative and comparative physiology, 2003; 285(5): R939-49.
Colwell, CS Michel, S   Sleep and circadian rhythms: do sleep centers talk back to the clock? Nature neuroscience. , 2003; 6(10): 1005-6.
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Colwell Christopher S, Michel Stephan   Sleep and circadian rhythms: do sleep centers talk back to the clock? Nature neuroscience, 2003; 6(10): 1005-6.
Itri Jason, Colwell Christopher S   Regulation of inhibitory synaptic transmission by vasoactive intestinal peptide (VIP) in the mouse suprachiasmatic nucleus Journal of neurophysiology, 2003; 90(3): 1589-97.
Colwell CS, Michel S, Itri J, Rodriguez W, Tam J, Lelievre V, Hu Z, Liu X and Waschek JA   Disrupted Circadian Rhythms and Synaptic Communication in Vasoactive Intestinal Peptide-Deficient Mice, Am. J. Physiol, 2003; 285(5): R939-R949.
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Itri J, Colwell CS   Presynaptic regulation of gamma-aminobutyric acid (GABA) release by vasoactive intestinal peptide (VIP) in the mouse suprachiasmatic nucleus, J. Neurophysiol, 2003; 90(3): 1589-1597.
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Michel Stephan, Itri Jason, Colwell Christopher S   Excitatory mechanisms in the suprachiasmatic nucleus: the role of AMPA/KA glutamate receptors Journal of neurophysiology, 2002; 88(2): 817-28.
Michel, S Itri, J Colwell, CS   Excitatory mechanisms in the suprachiasmatic nucleus: the role of AMPA/KA glutamate receptors Journal of neurophysiology. , 2002; 88(2): 817-28.
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Chaudhury D, Colwell CS   Circadian Modulation of Learning and Memory in Fear-Conditioned Mice, Behavioral Brain Research, 2002; 133: 95-108.
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Chaudhury Dipesh, Colwell Christopher S   Circadian modulation of learning and memory in fear-conditioned mice Behavioural brain research, 2002; 133(1): 95-108.
Miche, S Colwell, CS   Cellular communication and coupling within the suprachiasmatic nucleus Chronobiology international. , 2001; 18(4): 579-600.
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Colwell, CS   NMDA-evoked calcium transients and currents in the suprachiasmatic nucleus: gating by the circadian system The European journal of neuroscience. , 2001; 13(7): 1420-8.
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Colwell, CS   Rhythmic coupling among cells in the suprachiasmatic nucleus Journal of neurobiology. , 2000; 43(4): 379-88.
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Colwell, CS   Circadian modulation of calcium levels in cells in the suprachiasmatic nucleus The European journal of neuroscience. , 2000; 12(2): 571-6.
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Flett, J Colwell, CS   Serotonin modulation of calcium transients in cells in the suprachiasmatic nucleus Journal of biological rhythms. , 1999; 14(5): 354-63.
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Cepeda, C Colwell, CS Itri, JN Gruen, E Levine, MS   Dopaminergic modulation of early signs of excitotoxicity in visualized rat neostriatal neurons The European journal of neuroscience. , 1998; 10(11): 3491-7.
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Colwell CS.   Circadian Rhythms, Psychopharmacology: the fourth generation of progress. CD/ROM, 1998; .
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Levine MS, Cepeda C, Colwell CS, Yu Q, Chandler SH   Infrared video microscopy: visualization and manipulation of neurons in neostriatal slices, Receptor Localization: Laboratory Methods and Procedures, 1998; .
Colwell CS, Cepeda C, Crawford C, Levine MS   Postnatal Development of NMDA Evoked Responses in the Neostriatum, J. Dev. Neurobiology, 1998; 20: 154-163..
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Cepeda, C Colwell, CS Itri, JN Chandler, SH Levine, MS   Dopaminergic modulation of NMDA-induced whole cell currents in neostriatal neurons in slices: contribution of calcium conductances Journal of neurophysiology. , 1998; 79(1): 82-94.
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Colwell CS, Levine MS   Histamine modulates NMDA-dependent swelling in the developing neostriatum, Brain Research, 1997; 766: 205-212.
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Colwell, CS   Circadian rhythms. Time to get excited by GABA Nature. , 1997; 387(6633): 554-5.
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Colwell, CS Altemus, KL Levine, MS   Metabotropic glutamate receptor activation selectively limits excitotoxic damage in the intact neostriatum Brain research. , 1996; 726(1-2): 223-6.
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Colwell, CS Levine, MS   Glutamate receptor-induced toxicity in neostriatal cells Brain research. , 1996; 724(2): 205-12.
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Colwell CS, Altemus KL, Cepeda C, Levine MS   Regulation of NMDA-induced toxicity in the neostriatum: a new role for metabotropic glutamate receptors?, Proc. Natl. Acad. Science, 1996; 93(3): 1200-1204.
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Colwell CS   Regulation of Photic Input to Circadian Systems: a role for serotonin, Nervous systems and Behaviour. , 1995; 131.
Colwell CS, Menaker M.   Regulation of circadian rhythms by excitatory amino acids, Excitatory amino acids: Their Role in Neuroendocrine Function, 1995; 223-252.
Colwell, CS Levine, MS   Excitatory synaptic transmission in neostriatal neurons: regulation by cyclic AMP-dependent mechanisms The Journal of neuroscience : the official journal of the Society for Neuroscience. , 1995; 15(3 Pt 1): 1704-13.
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Colwell, CS Whitmore, D Michel, S Block, GD   Calcium plays a central role in phase shifting the ocular circadian pacemaker of Aplysia Journal of comparative physiology. A, Sensory, neural, and behavioral physiology. , 1994; 175(4): 415-23.
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Rea MA, Glass JD, Colwell CS   Serotonin modulates the photic response of the circadian oscillator in the hamster suprachiasmatic nucleus, J. Neuroscience, 1994; 14: 3635-3642.
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Colwell, CS Kaufman, CM Menaker, M Ralph, MR   Light-induced phase shifts and Fos expression in the hamster circadian system: the effects of anesthetics Journal of biological rhythms. , 1993; 8(3): 179-88.
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Colwell CS, Kaufman CM, Menaker M   Photic induction of Fos in the hamster suprachiasmatic nucleus is inhibited by baclofen but not by diazepam or bicucullin, Neuroscience Lett, 1993; 163: 177-181.
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Foster, RG Argamaso, S Coleman, S Colwell, CS Lederman, A Provencio, I   Photoreceptors regulating circadian behavior: a mouse model Journal of biological rhythms. , 1993; 8 Suppl: S17-23.
Colwell, CS Kaufman, CM Menaker, M   Phase-shifting mechanisms in the mammalian circadian system: new light on the carbachol paradox The Journal of neuroscience : the official journal of the Society for Neuroscience. , 1993; 13(4): 1454-9.
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Colwell, CS Michel, S Block, GD   Evidence that potassium channels mediate the effects of serotonin on the ocular circadian pacemaker of Aplysia Journal of comparative physiology. A, Sensory, neural, and behavioral physiology. , 1992; 171(5): 651-6.
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Colwell, CS Foster, RG   Photic regulation of Fos-like immunoreactivity in the suprachiasmatic nucleus of the mouse The Journal of comparative neurology. , 1992; 324(2): 135-42.
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Colwell CS, Khalsa SBS, Block GD   Cellular mechanisms of entrainment, Chronobiol. International, 1992; 9: 163-179.
Colwell CS, Khalsa SBS, Block GD   FMRFamide antagonizes the actions of 5-HT and light on a circadian rhythm recorded from the eye of Aplysia, J. Comp. Physiology, 1992; 170: 211-215.
Colwell, CS Foster, RG Menaker, M   NMDA receptor antagonists block the effects of light on circadian behavior in the mouse Brain research. , 1991; 554(1-2): 105-10.
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Colwell, CS Max, M Hudson, D Menaker, M   Excitatory amino acid receptors may mediate the effects of light on the reproductive system of the golden hamster Biology of reproduction. , 1991; 44(4): 604-8.
Colwell CS, Page TL   Circadian rhythms in spontaneous neural activity recorded in vivo and in vitro from cockroach's central nervous system, J. Comp. Physiology, 1990; 166: 643-649.
Colwell CS, Ralph M, Menaker M   Do NMDA receptors mediate the effects of light on circadian behavior in the golden hamster, Brain Research, 1990; 523: 117-120.
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Colwell CS   Interactive effects of serotonin and light on the circadian rhythm of neural activity recorded from the eye of Aplysia, J. Comp. Physiology, 1990; 167: 841-845.
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Colwell, CS Page, TL   The electroretinogram of the cockroach Leucophaea maderae Comparative biochemistry and physiology. A, Comparative physiology. , 1989; 92(1): 117-23.
Wills, SA Page, TL Colwell, CS   Circadian rhythms in the electroretinogram of the cockroach Journal of biological rhythms. , 1985; 1(1): 25-37.
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