Biomaterial Database

Shock-induced Analgesia in the cockroach (Periplaneta americana). 1994

G E Brown, and C L Anderson, and J L Scruggs

Department of Psychology, University of Tennessee, Martin 38238.

For 3 consecutive days cockroaches (Periplaneta americana) received escapable, inescapable, or no shock in an escape task. 24 hr. later minimum shock which initiated movement was identified. Reliably higher shocks were needed to initiate movement in the inescapably shocked roaches. In a second experiment the analgesia induced by inescapable shock was blocked by the opiate antagonist naloxone. The results are discussed in relation to the escape deficit and analgesia commonly seen following exposure to inescapable shock in a variety of species.

UI	MeSH Term	Description	Entries
D010526	Periplaneta	A genus in the family Blattidae containing several species, the most common being P. americana, the American cockroach.	Periplaneta americana,American Cockroach,American Cockroaches,American Cockroache,American Cockroachs,Cockroach, American,Cockroache, American,Cockroaches, American,Cockroachs, American,Periplaneta americanas,Periplanetas,americana, Periplaneta
D011930	Reaction Time	The time from the onset of a stimulus until a response is observed.	Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D011957	Receptors, Opioid	Cell membrane proteins that bind opioids and trigger intracellular changes which influence the behavior of cells. The endogenous ligands for opioid receptors in mammals include three families of peptides, the enkephalins, endorphins, and dynorphins. The receptor classes include mu, delta, and kappa receptors. Sigma receptors bind several psychoactive substances, including certain opioids, but their endogenous ligands are not known.	Endorphin Receptors,Enkephalin Receptors,Narcotic Receptors,Opioid Receptors,Receptors, Endorphin,Receptors, Enkephalin,Receptors, Narcotic,Receptors, Opiate,Endorphin Receptor,Enkephalin Receptor,Normorphine Receptors,Opiate Receptor,Opiate Receptors,Opioid Receptor,Receptors, Normorphine,Receptors, beta-Endorphin,beta-Endorphin Receptor,Receptor, Endorphin,Receptor, Enkephalin,Receptor, Opiate,Receptor, Opioid,Receptor, beta-Endorphin,Receptors, beta Endorphin,beta Endorphin Receptor,beta-Endorphin Receptors
D004597	Electroshock	Induction of a stress reaction in experimental subjects by means of an electrical shock; applies to either convulsive or non-convulsive states.	Electroconvulsive Shock,Electroconvulsive Shocks,Electroshocks,Shock, Electroconvulsive,Shocks, Electroconvulsive
D004924	Escape Reaction	Innate response elicited by sensory stimuli associated with a threatening situation, or actual confrontation with an enemy.	Flight Reaction,Escape Reactions,Flight Reactions,Reaction, Escape,Reaction, Flight,Reactions, Escape,Reactions, Flight
D006380	Helplessness, Learned	Learned expectation that one's responses are independent of reward and, hence, do not predict or control the occurrence of rewards. Learned helplessness derives from a history, experimentally induced or naturally occurring, of having received punishment/aversive stimulation regardless of responses made. Such circumstances result in an impaired ability to learn. Used for human or animal populations. (APA, Thesaurus of Psychological Index Terms, 1994)	Learned Helplessness
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001143	Arousal	Cortical vigilance or readiness of tone, presumed to be in response to sensory stimulation via the reticular activating system.	Vigilance, Cortical,Arousals,Cortical Vigilance
D017288	Pain Threshold	Amount of stimulation required before the sensation of pain is experienced.	Pain Thresholds,Threshold, Pain,Thresholds, Pain