| The psychobiology of play: theoretical and methodological perspectives J Panksepp, S Siviy, L Normansell Neuroscience & Biobehavioral Reviews 8 (4), 465-492, 1984 | 591 | 1984 |
| Brain opioids and social emotions J Panksepp, SM Siviy, LA Normansell The psychobiology of attachment and separation, 3-49, 1985 | 291 | 1985 |
| Effects of neonatal decortication on the social play of juvenile rats J Panksepp, L Normansell, JF Cox, SM Siviy Physiology & Behavior 56 (3), 429-443, 1994 | 254 | 1994 |
| Brain opioids and mother—infant social motivation J Panksepp, E Nelson, S Siviy Acta Paediatrica 83, 40-46, 1994 | 227 | 1994 |
| Rough‐and‐tumble play as a window on animal communication E Palagi, GM Burghardt, B Smuts, G Cordoni, S Dall'Olio, HN Fouts, ... Biological Reviews 91 (2), 311-327, 2016 | 223 | 2016 |
| In search of the neurobiological substrates for social playfulness in mammalian brains SM Siviy, J Panksepp Neuroscience & Biobehavioral Reviews 35 (9), 1821-1830, 2011 | 204 | 2011 |
| Sensory modulation of juvenile play in rats SM Siviy, J Panksepp Developmental Psychobiology: The Journal of the International Society for …, 1987 | 198 | 1987 |
| Neurobiological substrates of play behavior: Glimpses into the structure and function of mammalian playfulness. SM Siviy Cambridge University Press, 1998 | 154 | 1998 |
| A brain motivated to play: insights into the neurobiology of playfulness SM Siviy Behaviour 153 (6-7), 819-844, 2016 | 109 | 2016 |
| The relative playfulness of juvenile Lewis and Fischer-344 rats SM Siviy, NJ Love, BM DeCicco, SB Giordano, TL Seifert Physiology & Behavior 80 (2-3), 385-394, 2003 | 92 | 2003 |
| Casomorphins reduce separation distress in chicks J Panksepp, L Normansell, S Siviy, J Rossi III, AJ Zolovick Peptides 5 (4), 829-831, 1984 | 84 | 1984 |
| Endophinergic modulation of acceptability of putative reinforcers SM Siviy, LD Reid Appetite 4 (4), 249-257, 1983 | 75 | 1983 |
| Effects of neonatal handling and maternal separation on rough‐and‐tumble play in the rat JL Arnold, SM Siviy Developmental Psychobiology 41 (3), 205-215, 2002 | 74 | 2002 |
| Rough-and-tumble play behavior in Fischer-344 and Buffalo rats: Effects of social isolation SM Siviy, CN Baliko, KS Bowers Physiology & Behavior 61 (4), 597-602, 1997 | 69 | 1997 |
| Energy balance and play in juvenile rats SM Siviy, J Panksepp Physiology & Behavior 35 (3), 435-441, 1985 | 66 | 1985 |
| Fear, risk assessment, and playfulness in the juvenile rat. SM Siviy, KA Harrison, IS McGregor Behavioral neuroscience 120 (1), 49, 2006 | 65 | 2006 |
| Intracerebral administration of naloxone and drinking in water-deprived rats SM Siviy, F Bermudez-Rattoni, GA Rockwood, CM Dargie, LD Reid Pharmacology Biochemistry and Behavior 15 (2), 257-262, 1981 | 65 | 1981 |
| Opioids and palatability SM Siviy, DJ Calcagnetti, LD Reid The neural basis of feeding and reward, 517-524, 1982 | 61 | 1982 |
| A temporal analysis of naloxone's suppressant effect on drinking SM Siviy, DJ Calcagnetti, LD Reid Pharmacology Biochemistry and Behavior 16 (1), 173-175, 1982 | 56 | 1982 |
| Dysfunctional play and dopamine physiology in the Fischer 344 rat SM Siviy, CA Crawford, G Akopian, JP Walsh Behavioural Brain Research 220 (2), 294-304, 2011 | 54 | 2011 |