PhD's from the Summers Lab  at  USD

Laboratory of Molecular Neuropsychoecoendochemistry

Summers Lab Home             Investigators              Research               Publications                     Cliff Summers                     Contact Us                    

Summers' Lab Ph.D. Alumni

Jazmine Yaeger 16 Jazmine D.W. Yaeger, Ph.D. 2016-2021
N3 (Neuroscience, Nanotechnology & Networks) Fellow 


Yaeger JDW, KT Krupp, TR Summers, CH Summers 2022 Contextual generalization of social stress learning is modulated by
	orexin receptors in basolateral amygdala. Neuropharmacology DOI: 10.1016/j.neuropharm.2022.109168

Yaeger JDW, KT Krupp, BM Jacobs, BO Onserio, BL Meyerink,  JT Cain, PJ Ronan, KJ Renner, RJ DiLeone, CH Summers  2022 
	Orexin 1 receptor antagonism in basolateral amygdala shifts the balance from pro- to anti-stress signaling and behavior. 
	Biological Psychiatry 91: 841-852

Yaeger JDW, KT Krupp, JJ Gale, CH Summers 2020 Counter-balanced microcircuits for Orx1 and Orx2 regulation
	of stress reactivity. Medicine in Drug Discovery 100059:  1-20
    
Krupp KT, JDW Yaeger, LJ Ledesma, MHH Withanage, JJ Gale, CB Howe, TJ Allen, M Sathyanesan, SS Newton,
	CH Summers 2024 Single administration of a psychedelic [(R)-DOI] influences coping strategies 
	to an escapable social stress. Neuropharmacology 252: 109949: 1-15.
    
Pang T, JDW Yaeger, CH Summers, and R Mitra 2021 Cardinal role of the environment in stress induced changes
	across life stages and generations. Neuroscience and Biobehavioral Reviews 124: 137-150 

Summers CH, JDW Yaeger, CD Staton, DH Arendt, TR Summers 2020 Orexin/hypocretin receptor modulation of anxiolytic and antidepressive 
	responses during social stress and decision-making: potential for therapy. Brain Research 1731: 146085: 1-15

Staton CD, JDW Yaeger, DD Khalid, F Haroun, BS Fernandez, JS Fernandez, BK Summers, TR Summers, M Sathyanesan, SS Newton, CH Summers 
	2018 Orexin 2 receptor stimulation enhances resilience, while orexin 2 inhibition promotes susceptibility, to social stress, anxiety and
	depression. Neuropharmacology 143: 79-94.

Currently: Postdoctoral Fellow
Kevin Francis Laboratory
Sanford Research
Sioux Falls, SD

Justin SmithJustin P. Smith, Ph.D. 2008-2014


Smith JP, MA Prince, JK Achua, JM Robertson, RT Anderson, PJ Ronan, and CH Summers 2016 Intensity of anxiety is modified via complex 
	integrative stress circuitries. Psychoneuroendocrinology 63: 351-361    

Smith JP, JK Achua, TR Summers, PJ Ronan and CH Summers 2014 Neuropeptide S and BDNF gene 
	expression in the amygdala are influenced by social decision-making under stress. 
	Front Behav Neurosci 8:121: 1-13 doi: 10.3389/fnbeh.2014.00121

Robertson JM†, JK Achua†, JP Smith†, MA Prince, CD Staton, PJ Ronan, TR Summers, CH Summers 2017 Anxious behavior induces elevated 
	hippocampal Cb2 receptor gene expression.  Neuroscience 352: 273-284 

Summers TR, TL Summers,  RE Carpenter,  JP Smith,  SL Young,  B Meyerink,  TZ Orr,  DH Arendt, and  CH Summers 2017 Learning and CRF-induced 
	indecision during escape and submission in rainbow trout during socially aggressive interactions in the Stress-Alternatives Model
	Frontiers in Neuroscience 11: 515: 1-13
    
Robertson JM, MA Prince, JK Achua, RE Carpenter, DH Arendt, JP Smith, TL Summers, TR Summers, and CH Summers 2015 Nuance and behavioral	
	cogency: How the Visible Burrow System inspired the Stress-Alternatives Model and conceptualization of the continuum of anxiety. 	
	Physiology and Behavior 146: 86-97
    
Arendt DH, JP Smith, CC Bastida, M Prasad, KD Oliver,  KM Eyster, TR Summers, Y Delville
	and CH Summers 2012 Contrasting hippocampal and amygdalar expression of genes related 
	to neural plasticity during escape from social aggression. Phys Behav 107:670-679
 
Currently: Senior Director of Advanced Analytics
Digital and Analytics Department
St. Lukes Health System
190 East Bannock
Boise, ID 83712

David ArendtDavid H. Arendt, M.D., Ph.D. 2007-2013 


Arendt DH, J Hassell, Hao Li, JK Achua, DJ Guarnieri, RJ DiLeone, PJ Ronan, and CH Summers 2014 Anxiolytic function of the orexin 2 / 
	hypocretin A receptor in the basolateral amygdala. Psychoneuroendocrinology 40C: 17-26

Arendt DH, PJ Ronan, KD Oliver, LB Callahan,TR Summers and CH Summers 2013 Depressive
 	behavior and activation of the orexin/hypocretin system Behav Neurosci 127:86-94

Arendt DH, JP Smith, CC Bastida, M Prasad, KD Oliver,  KM Eyster, TR Summers, Y Delville
	and CH Summers 2012 Contrasting hippocampal and amygdalar expression of genes related 
	to neural plasticity during escape from social aggression. Phys Behav 107:670-679

Summers CH, JDW Yaeger, CD Staton, DH Arendt, TR Summers 2020 Orexin/hypocretin receptor modulation of anxiolytic and antidepressive 
	responses during social stress and decision-making: potential for therapy. Brain Research 1731: 146085: 1-15

Summers TR, TL Summers,  RE Carpenter,  JP Smith,  SL Young,  B Meyerink,  TZ Orr,  DH Arendt, and  CH Summers 2017 Learning and CRF-induced 
	indecision during escape and submission in rainbow trout during socially aggressive interactions in the Stress-Alternatives Model
	Frontiers in Neuroscience 11: 515: 1-13

Robertson JM, MA Prince, JK Achua, RE Carpenter, DH Arendt, JP Smith, TL Summers, TR Summers, and CH Summers 2015 Nuance and behavioral	
	cogency: How the Visible Burrow System inspired the Stress-Alternatives Model and conceptualization of the continuum of anxiety. 	
	Physiology and Behavior 146: 86-97         
        Previousely: Postdoctoral Fellow

Currently: Pediatrician
749 University Row
Ste 200
Madison, WI 53705

Russ Carpenter Russ E. Carpenter, Ph.D. 2004-2009

Carpenter RE, B Sabirzhanov, TR Summers, TG Clark, J Keifer and CH Summers 2023 Anxiolytic reversal of classically conditioned / 
	chronic stress-induced gene expression and learning in the stress alternatives model. Behavioural Brain Research 
	114258: 440: 1-10 

Carpenter RE and CH Summers 2009 Learning strategies during fear conditioning 
	Neurobiology of Learning and Memory 91: 415-423

Carpenter RE, WJ Korzan, C Bockholt, MJ Watt, GL Forster, KJ Renner and CH Summers 
	2009 Corticotropin releasing factor influences aggression and monoamines: 
	Modulation of attacks and retreats. Neuroscience 158: 412-425 

Carpenter RE, MJ Watt, GL Forster, Ø Øverli, C Bockholt, KJ Renner and CH Summers
	2007 Corticotropin releasing factor induces anxiogenic locomotion in trout and
	alters serotonergic and dopaminergic activity. Horm & Behav 52: 600-611

Summers TR, TL Summers,  RE Carpenter,  JP Smith,  SL Young,  B Meyerink,  TZ Orr,  DH Arendt, and  CH Summers 2017 Learning and CRF-induced 
	indecision during escape and submission in rainbow trout during socially aggressive interactions in the Stress-Alternatives Model
	Frontiers in Neuroscience 11: 515: 1-13

Robertson JM, MA Prince, JK Achua, RE Carpenter, DH Arendt, JP Smith, TL Summers, TR Summers, and CH Summers 2015 Nuance and behavioral	
	cogency: How the Visible Burrow System inspired the Stress-Alternatives Model and conceptualization of the continuum of anxiety. 	
	Physiology and Behavior 146: 86-97

Clotfelter ED, MM McNitt, RE Carpenter and CH Summers 2010 Modulation of monoamine 
	neurotransmitters in fighting fish Betta splendens exposed to waterborne 
	phytoestrogens Fish Physiol Biochem 36: 933-943
	
Lorenzi V, RE Carpenter, CH Summers, RL Earley and MS Grober 2009 Serotonin, social status and 
	sex change in the bluebanded goby Lythrypnus dalli. Physiol Behav 97:  476-483

Shaw JC, WJ Korzan, RE Carpenter, AM Kuris, KD Lafferty, CH Summers, Ø Øverli 2009 
	Parasite manipulation of brain monoamines in California killifish (Fundulus parvipinnis) 
	by the trematode Euhaplorchis californiensis. Proc R Soc B 276: 1137-1146
    
Clotfelter ED, EP O'Hare, MM McNitt, RE Carpenter and CH Summers 2007 
	Pharmacological manipulation of the serotonergic system affects aggressive 
	behavior and brain monoamine levels in the fighting fish Betta splendens. 
	Pharmacol, Biochem Behav 87: 222-31

Summers, CH, MJ Watt, TL Ling, GL Forster, RE Carpenter, WJ Korzan,
	JL Lukkes, Ø Øverli 2005 Glucocorticoid interaction with 
	aggression in non-mammalian vertebrates: Reciprocal action.
	Eur J Parmacol 526: 21-35

currently: WAC Consultant
Lecturer
University Writing Program
University of California, Davis
Davis, CA 95616

ParrishR. Parrish Waters, Ph.D. 2002-2007


Waters RP, M Rivalan, D Bangasser, J Deussing, M Ising, SK Wood, F Holsboer, CH Summers 2015 Evidence for the role of 
	corticotropin-releasing factor in major depression disorder Neuroscience & Biobehavioral Reviews 63: 351-361

Waters RP, KJ Renner, CH Summers, MJ Watt, GL Forster, LG Koch, SL Britten, JG Swallow 2010 
	Selection for intrinsic endurance modifies endocrine stress responsiveness Brain Res 1357: 53-61
   
Waters RP, KJ Renner, RB Pringle, CH Summers, SL Britton, LG Koch, JG Swallow 2008 
	Selection for aerobic capacity affects corticosterone, monoamines and  
	wheel-running activity Physiol & Behav 93: 1044-1054

Waters RP, AJ Emerson, MJ Watt, GL Forster, JG Swallow and CH Summers
	2005 Stress induces rapid changes in central catecholaminergic
	activity in Anolis carolinensis: Restraint and forced physical
	activity. Brain Res Bull 67: 210-218
        		
currently: Associate Professor
Department of Biological Sciences
University of Mary Washington
1301 College Avenue
Fredricksburg, VA  22401

WayneWayne J. Korzan, Ph.D. 2000-2004


Korzan WJ and CH Summers 2021 Evolution of stress responses refine mechanisms of social rank. 
	Neurobiology of Stress 100328: 1-19

Korzan WJ, TR Summers and CH Summers 2021 Neural and endocrine responses to social stress differ  
	during actual and virtual aggressive interactions or physiolgical sign stimuli. Biological Processes 182: 104294: 1-10
    
Korzan WJ, E Höglund, MJ Watt, GL Forster, Ø Øverli, JL Lukkes and CH Summers
	2007 Memory of opponents is more potent than visual sign stimuli after
	social hierarchy has been established. Behav Brain Res 183: 31-42

Korzan WJ and CH Summers 2007 Behavioral diversity and neurochemical plasticity:
	Selection of stress coping strategies that define social status.
	Brain Behav Evol 70: 257-266

Korzan WJ, GL Forster, MJ Watt, and CH Summers 2006 Dopaminergic
	activity modulation via aggression, status and a visual social
	signal. Behav Neurosci 120: 93-102

Korzan WJ, Ø Øverli and CH Summers 2006 Future social rank: 
	Forecasting status in the green anole (Anolis carolinensis) 
	Acta Ethologica 9: 48-57

Korzan WJ and CH Summers 2004 Serotonergic response to social stress
	and artificial social sign stimuli during paired interactions
	between male Anolis carolinensis.  Neuroscience 123: 835-845

Korzan WJ, TR Summers and CH Summers 2002 Manipulation of visual sympathetic
	sign stimulus modifies social status and plasma catecholamines. 
	General and Comparative Endocrinology 128: 153-161
    
Korzan WJ, TR Summers, PJ Ronan, KJ Renner and CH Summers 2001 The role
	of monoaminergic perikarya during aggression and sympathetic social
	signaling Brain Behavior and Evolution 57: 317-327

Korzan WJ, TR Summers, PJ Ronan and CH Summers 2000 Visible sympathetic
	activity as a social signal in Anolis carolinensis: Changes in
	aggression and plasma catecholamines Horm Behav 38: 193-199

Korzan WJ, TR Summers and CH Summers 2000 Monoaminergic activities
	of limbic systems are elevated during aggression: Influence of
	sympathetic social signaling Brain Research 870: 170-178
	
Carpenter RE, WJ Korzan, C Bockholt, MJ Watt, GL Forster, KJ Renner and CH Summers 
	2009 Corticotropin releasing factor influences aggression and monoamines: 
	Modulation of attacks and retreats. Neuroscience 158: 412-425 

Ling TJ, GL Forster, MJ Watt, WJ Korzan, KJ Renner and CH Summers 2009 Social status
	differentiates rapid neuroendocrine responses to restraint stress. 
	Physiol & Behav 96: 218-232

Shaw JC, WJ Korzan, RE Carpenter, AM Kuris, KD Lafferty, CH Summers, Ø Øverli 2009 
	Parasite manipulation of brain monoamines in California killifish (Fundulus parvipinnis) 
	by the trematode Euhaplorchis californiensis. Proc R Soc B 276: 1137-1146
 
Øverli Ø, C Sørensen, KGT Pulman, TG Pottinger, WJ Korzan, CH Summers 
	and G Nilsson 2007 Evolutionary background for stress coping styles:
	Relationships between physiological, behavioral, and cognitive
	traits in non-mammalian vertebrates Neurosci Biobehav Rev 31: 
	396-412 

Watt MJ, GL Forster, WJ Korzan, KJ Renner and CH Summers 2007 Initial
	perception of social threat rapidly alters neuroendocrine activity 
	Physiol Behav 90:  567-575    

Forster GL, N Feng, MJ Watt, WJ Korzan,  NJ Mouw, CH Summers and 
	KJ Renner 2006 Corticotropin-releasing factor in the dorsal 
	raphe elicits temporally distinct serotonergic responses in 
	the limbic system Neuroscience 141: 1047-1055

Forster GL, MJ Watt, WJ Korzan, KJ Renner and CH Summers 2005
	Opponent recognition between male green anoles (Anolis
	carolinensis). Anim Behav 69: 733-740
	
Höglund E, WJ Korzan, MJ Watt, GL Forster, TR Summers, H Falch
	Johannessen, KJ Renner and CH Summers 2005 Effects of L-DOPA
	on aggressive behavior and central monoaminergic activity in
	the lizard Anolis carolinensis, using a new method for drug
	delivery. Behav Brain Res 156: 53-64

Summers, CH, GL Forster, WJ Korzan, MJ Watt, ET Larson, Ø Øverli,
	E Höglund, PJ Ronan, TR Summers, KJ Renner, N Greenberg 2005
	Dynamics and mechanics of social rank reversal
	J Comp Physiol A 191: 241-252

Summers CH, WJ Korzan, JL Lukkes, MJ Watt, GL Forster, Ø Øverli,
	E Höglund, ET Larson, PJ Ronan, JM Matter, TR Summers, KJ Renner,
	and N Greenberg 2005 Does serotonin influence aggression?
	Comparing regional activity before and during social interaction
	Physiol Biochem Zool 78: 679-694

Summers CH, MJ Watt, TL Ling, GL Forster, RE Carpenter, WJ Korzan,
	JL Lukkes, Ø Øverli 2005 Glucocorticoid interaction with 
	aggression in non-mammalian vertebrates: Reciprocal action.
	Eur J Parmacol 526: 21-35

Meyer, WN, J Keifer, WJ Korzan and CH Summers 2004 Social stress and
	corticosterone regionally upregulate limbic N-methyl-D-Aspartate
	Receptor (NR) subunit type NR2A and NR2B in the lizard Anolis
	carolinensis.  Neuroscience 128: 675-684

Øverli Ø, WJ Korzan, E Höglund, S Winberg, H Bollig, MJ Watt, GL Forster,
	BA Barton, E Øverli, KJ Renner and CH Summers 2004 Stress coping style
	predicts aggression and social dominance in rainbow trout.
	Hormones & Behavior 45: 235-241

Øverli Ø, WJ Korzan, ET Larson, O Lepage, TG Pottinger, S Winberg, KJ Renner
	and CH Summers 2004 Behavioral and neuroendocrine correlates of 
	displaced aggression in trout Hormones & Behavior 45: 324-329

Summers, CH, JL Kampshoff, PJ Ronan, CA Lowry, AA Prestbo, WJ Korzan 
	and KJ Renner 2003 Monoaminergic activity in subregions of raphé
	nuclei elicited by prior stress and the neuropeptide corticotropin-
	releasing factor Journal of Neuroendocrinology 15: 1122-1133

Summers, CH, TR Summers, MC Moore, WJ Korzan, SK Woodley, PJ Ronan, 
	E Höglund, MJ Watt and N Greenberg 2003 Temporal patterns  
	of limbic monoamine and plasma corticosterone response during 
	social stress Neuroscience 116: 553-563	

currently: Associate Professor
Department of Biological and Environmental Sciences
University of West Alabama
Livingston, AL 35407

Pat Patrick J. Ronan, Ph.D. 1995-2000


Ronan PJ, WJ Korzan, PL Johnson, CA Lowry, KJ Renner, CH Summers 2023 Prior stress and vasopressin 
	promote corticotropin-releasing factor inhibition of serotonin release in the central nucleus 
	of the amygdala. Frontiers in Behavioral Neuroscience 17: 1148292: 1-14
    
Ronan PJ and CH Summers 2011 Molecular signaling and translational significance of
	the corticotropin releasing factor system - Chap 6 In Progress in Molecular Biology  
	and Translational Science Vol 98 The Brain as a Drug Target, S Rahman ed,  
	Academic Press, Burlington pp. 235-292

Ronan PJ and CH Summers 2008 Biology, Animal Models in 
	Encyclopedia of Psychological Trauma, G Reyes, J Elhai, J Ford eds, 
	John Wiley & Sons, New York pp. 80-83

Ronan PJ, MP Gaikowski, SJ Hamilton, KJ Buhl and CH Summers 2007 Ammonia causes decreased brain monoamines in fathead minnows (Pimephales 
	promelas). Brain Res 1147: 184-191

Robertson JM, JK Achua, JP Smith, MA Prince, CD Staton, PJ Ronan, TR Summers, CH Summers 2017 Anxious behavior induces 
	elevated hippocampal Cb2 receptor gene expression.  Neuroscience 352: 273-284

Smith JP, MA Prince, JK Achua, JM Robertson, RT Anderson, PJ Ronan, and CH Summers 2016 Intensity of anxiety is modified via complex
 	integrative stress circuitries. Psychoneuroendocrinology 63: 351-361
    
Arendt DH, J Hassell, Hao Li, JK Achua, DJ Guarnieri, RJ DiLeone, PJ Ronan, and CH Summers 2014 Anxiolytic function of the orexin 2 / 
	hypocretin A receptor in the basolateral amygdala. Psychoneuroendocrinology 40C: 17-26

Smith JP, JK Achua, TR Summers, PJ Ronan and CH Summers 2014 Neuropeptide S and BDNF gene 
	expression in the amygdala are influenced by social decision-making under stress. 
	Front Behav Neurosci 8:121: 1-13 doi: 10.3389/fnbeh.2014.00121	    

Arendt DH, PJ Ronan, KD Oliver, LB Callahan,TR Summers and CH Summers 2013 Depressive
 	behavior and activation of the orexin/hypocretin system Behav Neurosci 127:86-94
    
Summers, CH, GL Forster, WJ Korzan, MJ Watt, ET Larson, Ø Øverli,
	E Höglund, PJ Ronan, TR Summers, KJ Renner, N Greenberg 2005
	Dynamics and mechanics of social rank reversal
	J Comp Physiol A 191: 241-252

Summers, CH, WJ Korzan, JL Lukkes, MJ Watt, GL Forster, Ø Øverli,
	E Höglund, ET Larson, PJ Ronan, JM Matter, TR Summers, KJ Renner,
	and N Greenberg 2005 Does serotonin influence aggression?
	Comparing regional activity before and during social interaction
	Physiol Biochem Zool 78: 679-694
   
Ten Eyck, GR, PJ Ronan, KJ Renner and CH Summers 2005 Serotonin
	metabolism in directly developing frog embryos during paternal
	care. Neurosci Lett 388: 100-105

Summers, CH, JL Kampshoff, PJ Ronan, CA Lowry, AA Prestbo, WJ Korzan 
	and KJ Renner 2003 Monoaminergic activity in subregions of raphé
	nuclei elicited by prior stress and the neuropeptide corticotropin-
	releasing factor Journal of Neuroendocrinology 15: 1122-1133

Summers, CH, TR Summers, MC Moore, WJ Korzan, SK Woodley, PJ Ronan, 
	E Höglund, MJ Watt and N Greenberg 2003 Temporal patterns  
	of limbic monoamine and plasma corticosterone response during 
	social stress Neuroscience 116: 553-563
	 
Summers, TR, JM Matter, JM McKay, PJ Ronan, ET Larson, KJ Renner and
	CH Summers 2003 Rapid glucocorticoid stimulation and GABAergic
	inhibition of hippocampal serotonergic response: In vivo dialysis
	in the lizard Anolis carolinensis. Hormones & Behavior 43: 245-253
    
Korzan WJ, TR Summers, PJ Ronan, KJ Renner and CH Summers 2001 The role
	of monoaminergic perikarya during aggression and sympathetic social
	signaling Brain Behavior and Evolution 57: 317-327
	
Emerson, AJ, DP Kappenman, PJ Ronan, KJ Renner and CH Summers 2000
	Stress induces rapid changes in serotonergic activity: Restraint
	and exertion Behav Brain Res 111: 83-92

Korzan, WJ, TR Summers, PJ Ronan and CH Summers 2000 Visible sympathetic
	activity as a social signal in Anolis carolinensis: Changes in
	aggression and plasma catecholamines Horm Behav 38: 193-199

Summers, CH, ET Larson, PJ Ronan, PM Hofmann, AJ Emerson, and KJ Renner 2000
	Serotonergic responses to corticosterone and testosterone in the limbic
	system General Comp Endocrinol 117: 151-159

Deckel, AW, R Lillianey, PJ Ronan and CH Summers 1998 Lateralized effects
	of ethanol on aggression and serotonergic systems. Brain Research
	807: 38-46.

Matter, JM, PJ Ronan and CH Summers 1998 Central monoamines in free
	ranging lizards: Differences associated with social roles and
	territoriality Brain Behavior Evolution 51: 23-32.
     
currently: 
Veterans Affairs Research Service
Sioux Falls VA Health Care System
Sioux Falls, SD 57105, USA
and  
Associate Professor
Department of Psychiatry
Sanford Schol of Medicine
University of South Dakota
1400 W. 22nd Street
Sioux Falls, SD 57105

Gary R. Ten Eyck Gary R. Ten Eyck, Ph.D. 1993-1997

 

Ten Eyck GR, WJ Jermakowicz, AF Chinn and CH Summers 2005 Ontogeny of
	central serotonergic neurons in the directly developing frog,
	Eleutherodactylus coqui.  Anat & Embryol 210: 221-233
	
Ten Eyck GR, PJ Ronan, KJ Renner and CH Summers 2005 Serotonin
	metabolism in directly developing frog embryos during paternal
	care. Neurosci Lett 388: 100-105

Jermakowicz, WJ, DA Dorsey, AL Brown, K Wojciechowski, CL Giscombe,
	B M Graves, CH Summers and GR Ten Eyck 2004 Development of the
	nasal chemosensory organs in two terrestrial anurans: The directly
	developing frog, Eleutherodactylus coqui (Anura: Leptodactylidae),
	and the metamorphosing toad, Bufo americanus (Anura: Bufonidae).
	J Morph 261: 225-248


currently:  Associate Professor 
  Director of Basic Science
  Basic Science Division
  Department of Foundations of  Medicine
  NYU Long Island School of Medicine 
  222 Station Plaza North
  Mineola, NY 11501
Neuroscience Group at USD                     Biology Department                     Summers' Biology Webpage                     Summers' Course Offerings                     Contact Us                     USD
Email Dr. Summers: emailCliff@USD.Edu