Complex sensory properties of certain amygdala units in the freely moving cat
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Cited by (106)
Representation of ethological events by basolateral amygdala neurons
2022, Cell ReportsProtect and harm: Effects of stress on the amygdala
2020, Handbook of Behavioral NeuroscienceCitation Excerpt :In the awake rat, two distinct types of basolateral amygdala neurons were found to encode either palatability or rewarding properties of tasting (Fontanini, Grossman, Figueroa, & Katz, 2009). Amygdala neurons are often activated by presumably neutral visual stimuli in awake cats and rats, such as light flashes, striped card, rubber hose (Machne & Segundo, 1956; O'Keefe & Bouma, 1969; Pascoe & Kapp, 1985b; Uwano et al., 1995), and in monkeys, by stimuli such as tape, glove, bottle, or fork (Nishijo, Ono, & Nishino, 1988a; Wilson & Rolls, 1993). Neurons are also activated, often to a greater degree, by biologically relevant visual stimuli in awake cats and monkeys, such as a live mouse, live rat, food, and an air puff bulb (Jacobs & McGinty, 1971, 1972; O'Keefe & Bouma, 1969; Sanghera, Rolls, & Roper-Hall, 1979; Sawa & Delgado, 1963; Wilson & Rolls, 1993).
Interactions Among Multiple Parallel Learning and Memory Systems in the Mammalian Brain
2017, Learning and Memory: A Comprehensive ReferenceDorsal periaqueductal gray post-stimulation freezing is counteracted by neurokinin-1 receptor antagonism in the central nucleus of the amygdala in rats
2015, Neurobiology of Learning and MemoryCitation Excerpt :Moreover, of all the areas in the central nervous system, the amygdala is most clearly implicated in evaluating the emotional meaning of incoming stimuli (LeDoux, 1986). Several researchers have suggested that the amygdala assigns free-floating feelings of significance to sensory input, which the neocortex then further elaborates and imbues with personal meaning (Adamec, 1991; LeDoux, 1986; MacLean, 1985; O’Keefe and Bouma, 1969; Van Der Kolk, 2001). The neurokininergic system via SP/NK1 receptors in the CeA may contribute to the attribution of significance to the memory of an aversive stimulus associated with electrical stimulation of the dPAG, thereby strengthening emotional reactions to novel and stressful stimuli that are present in the EPM.
Selectivity and persistent firing responses to social vocalizations in the basolateral amygdala
2012, NeuroscienceCitation Excerpt :Further, the amygdala is involved in disorders that include an altered emotional response to speech, such as schizophrenia (Sanjuan et al., 2007; Escarti et al., 2010), autism (Gabis et al., 2008; Kim et al., 2010), and some forms of post-traumatic stress (Protopopescu et al., 2005; Shin et al., 2006). In other species, early work showed that amygdalar neurons respond to social vocalizations (Sawa and Delgado, 1963; O’Keefe and Bouma, 1969; Jacobs and McGinty, 1972), but there have been few systematic studies of responses to social vocalizations by amygdalar neurons. In recent work on mustached bats (Naumann and Kanwal, 2011), big brown bats (Gadziola et al., 2012), and rats (Parsana et al., 2012), conspecific vocal signals evoked a variety of temporal response patterns among basolateral amygdalar neurons, but neurons generally showed stronger excitatory discharge in response to vocal signals with negative affect.
Neural mechanisms of acquired phasic dopamine responses in learning
2010, Neuroscience and Biobehavioral ReviewsCitation Excerpt :The LHA represents US value, sending excitatory projections onto dopamine cells, while the VS neurons come to inhibit a dopamine burst that the LHA would otherwise cause once that US becomes “expected.” The excitatory component of the LV system (LVe) is associated with the central nucleus of the amygdala (CNA; Fuster and Uyeda, 1971; Miller, 2000; O’Keefe and Bouma, 1969; Ono et al., 1995; Sanghera et al., 1979; Schultz and Romo, 1990), which can learn stimulus associations to reward outcomes, and drive dopamine firing through excitatory projections of its own to the VTA and SNc. In a simple Pavlovian conditioning paradigm, these brain areas interact as follows.
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This work was supported by Contract SD-193 of the U. S. Department of Defense to Dr. Ronald Melzack. Dr. O'Keefe, now in the M.R.C. Cerebral Functions Research Group, Department of Anatomy, University College London, Gower St., London, W.C.1., England, was supported by a U.S.N.I.M.H. predoctoral grant and Dr. Bouma, who was on leave from the Institute for Perception Research, Eindhoven, the Netherlands, was supported by a grant from the Netherlands Organization for the Advancement of Pure Research (Z.W.O.). The authors thank Mr. Daniel Frank for his help in the early phases of this research and Dr. Melzack for his support and encouragement.