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However, rats for which the interval between learning and hippocampal lesions was longer retained significant contextual fear memory. In the same animals, lesions did not affect fear response to the tone at any time. These results indicate that fear memory is not a single process and that the hippocampus may have a time-limited role in associative fear memories evoked by polymodal (contextual) but not unimodal (tone) sensory stimuli.<\/jats:p>","DOI":"10.1126\/science.1585183","type":"journal-article","created":{"date-parts":[[2006,10,5]],"date-time":"2006-10-05T19:03:06Z","timestamp":1160074986000},"page":"675-677","source":"Crossref","is-referenced-by-count":2074,"title":["Modality-Specific Retrograde Amnesia of Fear"],"prefix":"10.1126","volume":"256","author":[{"given":"Jeansok J.","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Psychology, University of California, Los Angeles, CA 90024."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael S.","family":"Fanselow","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of California, Los Angeles, CA 90024."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1016\/S0079-6123(08)63056-3","volume":"87","year":"1991","unstructured":"BANDLER, R, INTEGRATION OF SOMATIC AND AUTONOMIC REACTIONS WITHIN THE MIDBRAIN PERIAQUEDUCTAL GRAY - VISCEROTOPIC, SOMATOTOPIC AND FUNCTIONAL-ORGANIZATION, PROGRESS IN BRAIN RESEARCH 87: 269 (1991).","journal-title":"PROGRESS IN BRAIN RESEARCH"},{"key":"e_1_2_1_2_1","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1037\/h0033521","volume":"81","year":"1972","unstructured":"BLANCHARD, D.C., INNATE AND CONDITIONED REACTIONS TO THREAT IN RATS WITH AMYGDALOID LESIONS, JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY 81: 281 (1972).","journal-title":"JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY"},{"key":"e_1_2_1_3_1","doi-asserted-by":"crossref","first-page":"370","DOI":"10.1037\/h0026779","volume":"67","year":"1969","unstructured":"BLANCHARD, R.J., CROUCHING AS AN INDEX OF FEAR, JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY 67: 370 (1969).","journal-title":"JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY"},{"key":"e_1_2_1_4_1","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1016\/0023-9690(86)90018-4","volume":"17","year":"1986","unstructured":"FANSELOW, M.S., ASSOCIATIVE VS TOPOGRAPHICAL ACCOUNTS OF THE IMMEDIATE SHOCK FREEZING DEFICIT IN RATS - IMPLICATIONS FOR THE RESPONSE SELECTION-RULES GOVERNING SPECIES-SPECIFIC DEFENSIVE REACTIONS, LEARNING AND MOTIVATION 17: 16 (1986).","journal-title":"LEARNING AND MOTIVATION"},{"key":"e_1_2_1_5_1","first-page":"151","year":"1991","unstructured":"Fanselow, M. 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