| Subanesthetic effects of the noncompetitive NMDA antagonist, ketamine, in humans: psychotomimetic, perceptual, cognitive, and neuroendocrine responses JH Krystal, LP Karper, JP Seibyl, GK Freeman, R Delaney, JD Bremner, ... Archives of general psychiatry 51 (3), 199-214, 1994 | 4049 | 1994 |
| Clinical significance of neurological soft signs in schizophrenia: factor analysis of the Neurological Evaluation Scale RA Sewell, EB Perry Jr, LP Karper, MD Bell, P Lysaker, JL Goulet, ... Schizophrenia research 124 (1-3), 1-12, 2010 | 567 | 2010 |
| Interactive effects of subanesthetic ketamine and haloperidol in healthy humans JH Krystal, DC D’Souza, LP Karper, A Bennett, A Abi-Dargham, ... Psychopharmacology 145, 193-204, 1999 | 286 | 1999 |
| Interactive effects of subanesthetic ketamine and subhypnotic lorazepam in humans JH Krystal, LP Karper, A Bennett, DC D’Souza, A Abi-Dargham, ... Psychopharmacology 135, 213-229, 1998 | 238 | 1998 |
| Dissociation of ketamine effects on rule acquisition and rule implementation: possible relevance to NMDA receptor contributions to executive cognitive functions JH Krystal, A Bennett, D Abi-Saab, A Belger, LP Karper, DC D’Souza, ... Biological psychiatry 47 (2), 137-143, 2000 | 209 | 2000 |
| Dose-related ethanol-like effects of the NMDA antagonist, ketamine, in recently detoxified alcoholics JH Krystal, IL Petrakis, E Webb, NL Cooney, LP Karper, S Namanworth, ... Archives of general psychiatry 55 (4), 354-360, 1998 | 197 | 1998 |
| Preliminary evidence of an association between sensorimotor gating and distractibility in psychosis. LP Karper, GK Freeman, C Grillon, CA Morgan 3rd, DS Charney, ... The Journal of neuropsychiatry and clinical neurosciences 8 (1), 60-66, 1996 | 179 | 1996 |
| Psychiatric safety of ketamine in psychopharmacology research EB Perry, JA Cramer, HS Cho, IL Petrakis, LP Karper, A Genovese, ... Psychopharmacology 192, 253-260, 2007 | 154 | 2007 |
| IV glycine and oral D-cycloserine effects on plasma and CSF amino acids in healthy humans DC D’Souza, R Gil, K Cassello, K Morrissey, D Abi-Saab, J White, ... Biological psychiatry 47 (5), 450-462, 2000 | 138 | 2000 |
| Absence of behavioral sensitization in healthy human subjects following repeated exposure to ketamine HS Cho, DC D’Souza, R Gueorguieva, EB Perry, S Madonick, LP Karper, ... Psychopharmacology 179, 136-143, 2005 | 41 | 2005 |
| The effect of ketamine on pre-pulse inhibition and attention LP Karper, C Grillon, D Abi-Saab, CA Morgan, DS Charney, JH Krystal Schizophrenia Research 1 (15), 180, 1995 | 33 | 1995 |
| Ritanserin antagonism of m-chlorophenylpiperazine effects in neuroleptic-free schizophrenics patients: support for serotonin-2 receptor modulation of … W Abi-Saab, JP Seibyl, CD D'Souza, LP Karper, R Gueorgueva, ... Psychopharmacology 162, 55-62, 2002 | 29 | 2002 |
| Prolonged postictal encephalopathy in two patients with clozapine-induced seizures. LP Karper, SP Salloway, JP Seibyl, JH Krystal The Journal of Neuropsychiatry and Clinical Neurosciences 4 (4), 454-457, 1992 | 23 | 1992 |
| Short-term use of disulfiram with clozapine LM Brenner, LP Karper, JH Krystal Journal of Clinical Psychopharmacology 14 (3), 213-214, 1994 | 16 | 1994 |
| Coordination of care for homeless individuals with comorbid severe mental disorders and substance-related disorders L Karper, M Kaufmann, G Millspaugh, E Vega, G Stern, G Stern, DJ Ezrow, ... Journal of dual diagnosis 4 (2), 142-157, 2008 | 13 | 2008 |
| Dose-related effects of the NMDA antagonist, ketamine, in healthy humans JH Krystal, LP Karper, JP Seibyl, R Delaney, JD Bremner, MB Bowers, ... Schizophrenia Research 9 (2-3), 240-241, 1993 | 12 | 1993 |
| Modulating ketamine-induced thought disorder with lorazepam and haloperidol in humans J Krystal, L Karper, A Bennett, D Abi-Saab, C D'Souza, A Abi-Dargham, ... Schizophrenia Research 15 (1-2), 156-157, 1995 | 10 | 1995 |
| Differentiating NMDA dysregulation in schizophrenia and alcoholism using ketamine J Krystal, L Karper, C D'Souza, E Webb, A Bennett, A Abi-Dargham, ... Schizophrenia research 1 (15), 156, 1995 | 8 | 1995 |
| Antipsychotics, lithium, benzodiazepines, beta-blockers LP Karper, AL Bennett, JJ Erdos, JH Krystal Journal of Offender Rehabilitation 21 (3-4), 203-222, 1994 | 8 | 1994 |
| Tryptophan depletion paradigm: implications for schizophrenia DC D'Souza, R Gil, A Abi-Dargham, L Karper, D Abi-Saab, K Morrissey, ... Biological Psychiatry 35 (9), 703, 1994 | 6 | 1994 |
